視力表判別標準? - 眼鏡
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By Oliver
at 2014-06-09T13:35
at 2014-06-09T13:35
Table of Contents
大家好,驗光時,通常會測視力表,判別E或者C的缺口方向,
是不管清晰度 亮度 銳利 模糊,可以感受缺口方向即可?
那是要很輕鬆的判定?還是不太確定隱隱約約也可?
如果受測者非常免強甚至有點猜?的方式判定
驗光結果就會不足? 反之會足度甚至過矯?
到底標準為何呢?應該如何判定?
一般使用墨鏡鏡片都很大,近視者使用全視線,鏡片並不大,紫外線強的情況下
鏡片變深瞳孔放大,紫外線從四面八方近來(除正前方),不就反而造成傷害?
近距離工作一段時間休息可防止度數加深,應該要閉目養神、不戴眼鏡放空或看遠
、戴眼鏡看遠、戴眼鏡來回看近看遠,應該如何做呢?
謝謝大家
--
是不管清晰度 亮度 銳利 模糊,可以感受缺口方向即可?
那是要很輕鬆的判定?還是不太確定隱隱約約也可?
如果受測者非常免強甚至有點猜?的方式判定
驗光結果就會不足? 反之會足度甚至過矯?
到底標準為何呢?應該如何判定?
一般使用墨鏡鏡片都很大,近視者使用全視線,鏡片並不大,紫外線強的情況下
鏡片變深瞳孔放大,紫外線從四面八方近來(除正前方),不就反而造成傷害?
近距離工作一段時間休息可防止度數加深,應該要閉目養神、不戴眼鏡放空或看遠
、戴眼鏡看遠、戴眼鏡來回看近看遠,應該如何做呢?
謝謝大家
--
Tags:
眼鏡
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