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学龄前儿童远视 常为正常现象

健康 来源:山西晚报 2018年06月20日 09:33 A-A+ 二维码
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原标题:

  幼儿园一个班39个孩子有30个双眼0.8,正常吗?答案是正常。山西省人民医院眼科副主任医师谢英说,学龄前儿童的眼睛,由于生长发育的原因,眼球较小,眼轴并未达到成人水平,眼睛的前后轴较短,眼睛所看到的景物就会聚焦到视网膜后面的位置,有些类似远视眼发生的情况。

  “学龄前儿童差不多会有200度-400度的生理性远视,随着儿童生长发育和眼球成熟,这种‘远视’会逐渐减弱或消失,到8岁左右,眼球大小基本定型,眼轴长短接近成人水平。”谢英说,三四岁的孩子视力会达到0.6,五六岁的就在0.6-0.8。“如果发现孩子的视力达不到同年龄儿童的平均视力,就要到医院进行屈光状态和眼病筛查了。”

  谢英说,很多孩子做视力表检查,结果忽高忽低,这时一些验光师就会得出近视的结论,要给孩子配眼镜,其实这种情况往往是假性近视。“如果孩子在‘散瞳’检测前后的视力值有差异,就说明孩子已经有假性近视了。”谢英说,6岁前的孩子视力还在发育,轻度的屈光不正,或者假性近视,可以考虑暂不配镜,而有针对性地给孩子做眼部保健并定期检查,大部分幼儿的视力可以恢复正常。

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我要纠错编辑:邹杨 责任编辑:张福伟
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