天气预报 > 其他 > 七周岁的孩子正常视力多少
七周岁的孩子正常视力多少
更新时间: 2020-11-04 00:00:00  

7岁的儿童正常视力是1.0,我国儿童正常远视力的设置标准为3岁0.5,4岁0.7,5岁0.8,6岁1.0。

视力是指视网膜分辨影像的能力,视力的好坏由视网膜分辨影像能力的大小来判定,然而当眼的屈光介质变得混浊或存在屈光不正时,即使视网膜功能良好的眼视力仍会下降。

关键词: 周岁 孩子 正常 视力 多少

七周岁的孩子正常视力多少相关经验

天气预报

最新推荐

页面:/news/view-253440/ | 耗时:0.1858 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=253440 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=253440 LIMIT 0,1
select * from tbl_Articles_sphinx where id=253440 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1109308,1096254,1074712,1102814,1105543,1095554,1112642,1071131,1110031,1112096,1102282,1118757,1079956,1086464,1076095,1073832,1116293,1067795,1107261,1086091,1100215,1063213,1094815,1091183,1086434,1063429,1067089,1044569,1067567,1081969) ORDER BY field (ArticleID,1109308,1096254,1074712,1102814,1105543,1095554,1112642,1071131,1110031,1112096,1102282,1118757,1079956,1086464,1076095,1073832,1116293,1067795,1107261,1086091,1100215,1063213,1094815,1091183,1086434,1063429,1067089,1044569,1067567,1081969)