Question

the narrator mother become blind overnight .what caused this blindness
​

Answer 1

Sudden Blindness is a condition when you suddenly find it difficult to see. People think that sudden vision loss is the same as complete blindness. However, they are not the same. You might experience blurry vision. You might feel like you are suffering from a sudden loss of peripheral vision. Else, you might even feel like a sudden loss of your central vision. All of these three problems fall under Sudden Blindness. The duration of Sudden Blindness can vary. It may last for only a few seconds or many hours. There is a chance that Sudden Blindness may be permanent if treatment is not received at the appropriate time.

Answer 2

Explanation:

Refractive errors include near-sightedness, far-sightedness, presbyopia, and astigmatism. Cataracts are the most common cause of blindness. Other disorders that may cause visual problems include age-related macular degeneration, diabetic retinopathy, corneal clouding, childhood blindness, and a number of infections.