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What are some possible causes of sudden, temporary blindness?

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Some possible causes of temporary blindness are severe migraine headaches, sickle cell disease and glaucoma, states Summit Medical Group. This condition is a warning sign of serious complications like stroke and also can also lead to permanent loss of vision.

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Sickle cell disease is a blood condition that is characterized by the sickling of red blood cells, and can lead to sudden blindness. Glaucoma is an eye condition that occurs when a person's optic nerve in the eye is damaged, notes WebMD. Glaucoma is triggered by the buildup of pressure in the eye and can lead to both temporary and permanent blindness.

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