天气预报 > 其他 > 儿童裸眼视力正常是多少
儿童裸眼视力正常是多少
更新时间: 2020-11-05 00:00:00  

儿童裸眼视力,随着年龄增长在不断变化。刚出生时宝宝的裸眼视力为0.01-0.02。至1岁时视力达0.2;2岁时达0.4;3岁时0.5-0.6;4岁达0.6-0.8;5-6岁龄时视力与成人视力基本一致,达1.0或1.0以上。宝宝年龄较小,正处于视力发育的关键期,所以要注意儿童眼保健,平日培养良好的用眼习惯,不要再晃动、震荡的状态下看书,看电视应该要距离电视屏幕大于其对角线5-7倍远,每次看电视时间不得超过20分钟。

关键词: 儿童 视力 正常 多少

儿童裸眼视力正常是多少相关经验

天气预报

最新推荐

页面:/news/view-1943057/ | 耗时:0.2478 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=1943057 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1943057 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1943057 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1056968,1080291,1050037,1074867,1049344,1064783,1093989,1089237,1044867,1051655,1094113,1077074,1071697,1068016,1049836,1082469,1090561,1077182,1066018,1076656,1088906,1091703,1068358,1086832,1076267,1074340,1042020,1090150,1085906,1049548) ORDER BY field (ArticleID,1056968,1080291,1050037,1074867,1049344,1064783,1093989,1089237,1044867,1051655,1094113,1077074,1071697,1068016,1049836,1082469,1090561,1077182,1066018,1076656,1088906,1091703,1068358,1086832,1076267,1074340,1042020,1090150,1085906,1049548)