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4岁远视力多少正常

更新时间: 2020-11-05 00:00:00     

4岁的正常远视力是在0.6一0.8左右。如果其远视力在不在这个范围,可做散瞳验光检查,必要时配戴合适的眼镜进行矫正。远视力检测方式是用远视力测试表查验。常见的远视力测试表是国际性标准视力表和中国规范对数视力表二种。用视力测试表检查视力的方式:规定被检查者间距视力测试表3米,视力测试表要有充裕的光源照明灯具。眼睛各自查验(通常应查右眼,再查右眼。查验一只眼睛时,另一个一只眼睛得用遮眼板遮挡,不必对眼珠施压)。假如立在3米处看不清楚最上边每行,则慢慢挨近视力测试表直到认清已经。

关键词: 视力 多少 正常

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