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A 37-year-old member asked:

What are d causes of night blindness?

1 doctor answer1 doctor weighed in
Dr. Jeffrey Whitman
Ophthalmology 45 years experience
Genetics: There are congenital issues that can cause night blindness---it is rarely acquired unless there is severe retinal disease.

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A 39-year-old member asked:

What causes night blindness to happen?

2 doctor answers5 doctors weighed in
Dr. Terence Grogan
Family Medicine 25 years experience
Nyctalopia: Or night blindness is a symptom of something else such as myopia or malnutrition it is treated based on the cause. It is the inability to see at night or in low light environment.
A 37-year-old member asked:

I have heard that Crohn's can cause "night blindness"?

1 doctor answer1 doctor weighed in
Dr. Ihor Zakaluzny
General Surgery 38 years experience
Very rarely: Severe chronic and active disease of the small bowel, or removal of a large portion of the small bowel, can lead to vitamin a deficiency in crohn's disease patients.
A 42-year-old member asked:

I was wondering what are some causes and cures for night blindness?

1 doctor answer3 doctors weighed in
Dr. Dariush Saghafi
Neurology 33 years experience
Can be treatable: Nyctalopia can be caused by a number of things. A few are birth defects, vitamin a deficiency, medications, glaucoma, diabetes, cataracts, severe near sightedness, retinitis pigmentosa, and refractive surgery (eg. Lasik). There are other causes (some untreatable) but of the ones listed above the only untreatable causes are birth defects and retinitis pigmentosa. Treatable not same as curable.
A 48-year-old member asked:

Any ideas why myopia causes night blindness?

1 doctor answer1 doctor weighed in
Dr. Tim Conrad
Ophthalmology 34 years experience
It doesn't: Although many myopic people have some difficulty seeing at night, this is not night blindness. Classically night blindness is caused by a peripheral retinal disorder called retinitis pigmentosa.

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Last updated Oct 28, 2013
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