视力表为什么要用E这个字母？
<p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">正如本文标题所说，相信很多人都有过这样的疑惑。</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">平时我们测视力的时候，基本用的都是这种画满了各种方向E的表。</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">世界上的文字和符号有那么多，为什么偏偏选择了<span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">字母E</span>呢？</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">为了让大家在别人问起来的时候有学识可卖了解到更多知识，今天小编就掰开揉碎地来讲一讲。</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">字母“E”究竟有何特别之处？</span></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; margin: 0px; padding: 0px; border: 0px;">“视力表的E是单词eyes（眼睛）的缩写！”</span></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">不好意思，这个说法是<span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">完完全全离谱儿的。</span></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">这里涉及到一个非常专业的概念——</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">请滑动阅览</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">所谓视角，正常情况下，人眼能分辨出两点间的最小距离所形成的视角为最小视角，即一分视角。在5米距离，10行“E”字上下两横，在视网膜上的投影正好是一分视角。</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">视力表就是以一分视角为单位进行设计的。以距离近视表5米为标准，能看清楚的字越小，表示和眼睛之间形成的视角也越小。</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">三划等长字母E的每一个笔画和空隙都是正方形的五分之一，具有一定的栅格结构，对于测试散光很有帮助。</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">所以E最符合严格的视角分辨率设计意义。</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">咳咳，像小编一样看不懂也不要紧，简单来讲，我们<span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">选用E字，是因为它的形状、大小、排列等都更加符合我们眼睛的“分辨率”，这样的设计能相对反应出你真实的视力</span>。</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">当你看不清时就真的是看不清，倔强也没有用。</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">正是因为这点，很多字母和符号就都被PASS掉了。</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">这倒未必， 因为除了E表，还是有其他视力表的存在，比如：</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">我国飞行员检测时选用的C字视力表</span>（兰德特环行视力表）</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">C表和E表原理相似，但C表有8个开口方向，检测起来更加严格精确。</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">对实力有信心的盆友可以挑战一下~</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">美国现在还在沿用“斯内伦视力表</span>（Snellen chart）<span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">”</span>，它由各种拉丁字母组成的，是最初版本的视力表。</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">也有这种并不常见的<span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">由汉字组成的视力表。</span></p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">这些文字类视力表的检测更加精准，但问题也更突出：</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">另外，一般的检测标准都是要求保持5米的距离，在空间不足的情况下，我们往往会通过镜像来实现。</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">这个时候表示方向的E或C肯定都没问题，但是文字的话就……</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">此外，我们还有<span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">幼儿专用视力检测表</span>，比较适合学龄前儿童。</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">风靡网络的动态视力测试表</span>，看看哪个运动员在偷懒。</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">是不是看了一大圈，还是我们的E字表最合适？</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">视力有时候是1.0</span><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">有时候是5.0</span></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">哪个更准？</span></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">都准确！其实这是由于<span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">视力表的记录标准</span>不同所产生的差异。</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">我们使用的视力表分为<span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">“标准对数视力表”</span>（“国际视力表”或“旧视力表”）与<span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">“小数记录视力表”</span>（“中国视力表”或者“新视力表”），测量范围一种从4.0~5.3，一种从0.1~2.0。这两种视力表的结果是可以换算的。</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">换算公式▼</span></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">标准对数视力表</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">4.0</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);">4.1</p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">4.3</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">4.4</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">4.5</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">4.6</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">4.7</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">4.8</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">4.9</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">5.0</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">5.1</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">5.2</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">5.3</span></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">小数记录视力表</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">0.1</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">0.12</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">0.2</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">0.25</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">0.3</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">0.4</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">0.5</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">0.6</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">0.8</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">1.0</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">1.2</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">1.5</span></p><p class="syl-line-pure-english" style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">2.0</span></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">照此延伸，那么3.0是属于视力太好了还是太差了？</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">把视力表都背下来就不怕检查了</span></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">这个问题曾经困扰了近视小编很多年，为了让自己的视力检查结果稍微提升一点点，任何冒险都值得尝试。</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">但事实上，这样做也许会锻炼你的记忆力，<span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">对视力检查真的一点帮助都没有</span>。</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">我们进行检查的目的是想要了解自己视力的真实情况，这种弄虚作假到最后也只是自欺欺人。</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">更何况，<span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">视力检查一般都会随机选择视力表</span>，你勉勉强强背下的“答案”可能根本就不对应“题目”，最后还是弄巧成拙。</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">退一万步讲，就算把所有视力表都背下来了，你就真能看清医生所指的位置吗？</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">在家自己检查视力准吗？</span></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">在家里完全可以进行简单的视力检查，我们需要准备一张<span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">标准对数视力表（GB/T 11533-2011）</span>，还要<span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">保证足够5米远</span>的检测距离（或用2.5米的镜像方法）。</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">但是小编想告诉大家，其实使用视力表检查只能作为一种参考，有很多因素都可能影响到检查结果，比如：</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">1. 视力表的光照度或者灯箱的亮度</span></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">说起来，我们所看到的<span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">视力表的亮度对检查结果影响很大</span>，往往当光线或者灯箱的亮度充足时，我们的视力检测结果总是喜闻乐见的~</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">因为光线问题，小编的视力有段时间就曾经在1.0和0.6之间徘徊过。</p><p></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">2. 房间的亮度</span></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">我们所在检测房间的<span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">亮度会</span><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">影响瞳孔大小</span>，进而干扰到视力的检查结果。一般情况下，检查还是建议采用中等亮度。</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">3. 视力表的对比度</span></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">纸质视力表放置时间长了会有污垢附着，颜色也会变得暗淡，检测出的视力自然就不准确了。如果使用的视力表灯箱，也应保持灯箱洁净，定期更换灯管。</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);"><span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">4. 心理和精神因素</span></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">由于视力反映的不仅仅是眼睛的状况，与视神经等大脑皮质视觉中枢都有关系，很受心理状况的影响。尤其是小朋友，<span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">过于紧张或者不认真看，都可能影响检查结果。</span></p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">此外，视力检查其实是一项很复杂的工作，我们平时用的视力表只是第一步，一般还会做外眼部、眼底、眼压、色觉、屈光度、散光等等一系列的检查。若想获得最准确的结果，<span style="box-sizing: border-box; font-weight: 700; margin: 0px; padding: 0px; border: 0px;">建议还是要去医院或者专业机构来检查</span>最放心。</p><p style="box-sizing: border-box; margin-top: 20px; margin-bottom: 20px; padding: 0px; border: 0px; color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255);">那么，今天的内容就是酱紫了。最后还有一则来自编辑部全体近视小编们的忠告：</p><p></p><p><span style="color: rgb(34, 34, 34); font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei, WenQuanYi Micro Hei, Helvetica Neue, Arial, sans-serif; font-size: 18px; text-align: justify; background-color: rgb(255, 255, 255);">部分素材来源：科普中国、京医通、一只学霸、知乎</span></p><link rel="stylesheet" href="//www.fqlook.cn/source/plugin/wcn_editor/public/wcn_editor_fit.css?v134_Yqi" id="wcn_editor_css"/> 小小的视力表还有这么多讲究飞行员的那个视力表简直变态
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