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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الطب

الرأرأة (اهتزاز العين) |  Nystagmus

26 أبريل 2020


مصطلح يدل على حركة غير طبيعية للعين، لا يستطيع الشخص معها تركيز نظره على نقطة معينة؛ إذ تتحرك الحدقة حركات سريعة ومنتظمة، وقد تكون هذه الحالة خلقية ناتجة عن خلل عصبي، أو قصيرة مرضية ناتجة عن آثار التسمم، أو الكحول، أو بعض الأدوية.


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