وفّر 50٪ من خلال الاشتراك السنوي في مجرة واحصل على تصفح لا محدود لأفضل محتوى عربي على الإنترنت.

مجرة
هارفارد بزنس ريفيو
إم آي تي تكنولوجي
العلوم للعموم
نفسيتي
ستانفورد للابتكار الاجتماعي
اشترك الآن
اشترك الآن
اشترك

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عذراً، عذرا،أنت مشترك مسبقاً بالنشرة البريدية

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عذراً، هناك مشكلة في البريد الالكتروني

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الطب

العمى الليلي(العشى الليلي) |  Night blindness

26 أبريل 2020


وهو اضطراب في الرؤية يظهر بعدم تمكن العين من الرؤية الواضحة بالليل او في الضوء الخافت ويعود الى خلل في شبكية العين وراثي او بسبب مرض عيني ما او بسبب نقص فيتامين A .


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