How is night blindness treated?

The most common cause of poor night vision -- cataracts -- is also one of the most treatable. Cataract surgery replaces the clouded natural lens with a clear plastic lens. Vision is immediately improved, often dramatically, although many people will still need to wear glasses for good night vision.

Diabetic retinopathy can be prevented by tightly controlling blood sugar levels with medicines and diet. One treatment for advanced diabetic retinopathy uses a laser to destroy tiny budding blood vessels that threaten vision. Called panretinal photocoagulation, this laser procedure preserves vision overall.

But night vision can be even worse afterward. Although vitamin A and zinc deficiency aren't common causes of night blindness, it's worthwhile to eat a diet rich in these nutrients if you're having night vision problems. More.

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