不同视标间距视力表对弱视及正常儿童视力检查结果的影响  

The different influences on visual acuity charts with various spacing of targets in normal and amblyopic children

作　　者：陈镇国[1] 王强[1] 徐进[1] 钱卫亮[1] 林思思[1] 

机构地区：[1]温州医学院附属第三医院,浙江温州325200

出　　处：《中国实用眼科杂志》2011年第9期912-914,共3页Chinese Journal of Practical Ophthalmology

基　　金：温州科技局资助立项课题（Y20080132）、黑龙江省卫生厅课题资助（2005-185）

摘　　要：目的研究用于检查儿童弱视拥挤视力的合适的视标间距。方法经眼科门诊的73名5。11岁儿童，平均年龄（7．34±1．416）岁，应用单个视标、1／4倍、1／2倍、1倍、2倍间距拥挤视力表分别检查弱视、弱视治愈后及正常儿童的视力。并比较使用五种视标间距视力表所得检查结果在正常眼、弱视眼及弱视治愈眼中的差异。结果（1）弱视患儿的1／2和1／4倍间距视力与单个视标视力差异有统计学意义。（2）正常儿童和弱视治愈后儿童的1／4倍间距视力均与单个视标视力差异有统计学意义。结论弱视、弱视治愈后及正常儿童均存在拥挤现象，但弱视患儿更明显。1，2倍间距视力与单个视标视力是否有差异，可以作为儿童弱视诊断和治愈的一个评价指标。Objective To evaluate the reliability of visual acuity （VA） examination using charts with various targets spacing in amblyopic children. Methods Seventy-three children were recruited and divided into three groups. VA charts with single target, and various times spacing were used respectively to evaluate the children＇s VA before and after treatment. Results There were significant differences among the VA measured by 0.25, 0.5 and 1 times spacing. There were also significant differences in VA measured by single target and 0.25 times spacing charts between healthy and amblyopic subjects. Conclusions Determining the differences between VA measured by single target and 0.5 time spacing chart may be a useful tool in the fullow-up of amblyopia.

关 键 词：弱视 拥挤现象 视标间距 视力检查 

分 类 号：R778[医药卫生—眼科]