Vision - night blindness

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Vision - night blindness

Definition

Night blindness is poor vision at night or in dim light.

Alternative Names

Nyctanopia; Nyctalopia; Night blindness

Considerations

Night blindness can cause problems with driving in the evening or at night. Consult your health care provider or eye doctor.

Causes

cataracts (usually in older persons)
retinitis pigmentosa (may be the first sign of the disease in a young person)
poor adaptation to darkness (not caused by any disease)
- often accompanied by myopia (nearsightedness)
vitamin A deficiency
certain drugs can cause night blindness
birth defect

Review Date: 8/18/2003
Reviewed By: Edward B. Feinberg, M.D., M.P.H., Professor and Chair, Ophthalmology, Boston University School of Medicine, Boston, MA. Review provided by VeriMed Healthcare Network.

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