What is night blindness

Night blindness (nyctalopia) is the inability to see well at night or in poor light. It is not a disorder in itself, but rather a symptom of an underlying disorder or problem, especially untreated myopia.

http://ghr.nlm.nih.gov/exit?to=my.clevelandclinic.org&uid=7bH4sIAAAAAAAAAE3JMQrDMAxA0av0BNbesdChS65gXEnEAlcKkhMa6OGbBALZPu-jKUkX0.ykGctepd2cw2ZHjqvm16.2Pt0BPmvCxgu3ooRNVDCZj0AS5sQeoDLWnt.bIuUIqIJ5OOxxWioxff8B1-UDfgAAAA__

night blindness is when some ones eyes are so weak, they cant see in the dark

http://wiki.answers.com/Q/What_is_night_blindness%3F

Night blindness can be a number of things. One of the things that is called night blindness is a decreased ability to see at night. Some people become more nearsighted at night as the pupil dilates in dark conditions, a condition called sph…

http://ehealthforum.healthology.com/eye-care/eye-care-information/article470.htm

Related Questions Answered on Y!Answers

Is Night Blindness a symptom of a pituitary tumor?

Q: I don’t know much about them, but is “night blindness” a possible symptom? I know they impact vision but I’m interested in just that symptom.

A: Loss of peripheral vision is a sign of pituitary tumor. That is from pressure on the optic nerve.When you have a pituitary tumor, you are checked by optic field tests so as to see how the optic nerve is or is not effected.

How do I know if I have night blindness?

Q: I don’t think I have night blindness, but I know I have a hard time driving in the dark. Even if I try to look away from other cars’ headlights, they prevent me from seeing the road. I felt like I couldn’t see anything today and I had to try really hard to stay in my lane. I don’t have that much driving experience, especially in the dark, but I wonder if it’s normal that I have this hard of a time seeing. What could be wrong?

A: It sounds to me that is what your problem is. I would for sure check with you eye doctor. I have the same problem and I hardly drive at night anymore.

Who can I see regarding night blindness? Is there a specialist? Is there a cure?

Q: I suffer from night blindness and can’t seem to find someone who can diagnose me or recommend a treatment. I would like to know what you know about it. Any information will do!

A: There is a simple test using a light box. However though I saw one as a student, which incidentally showed that I have the problem, I have never seen one since, nor have I ever come across any patient tested in this way.I suspect the armed forces do the test, but I can think of few other reasons to carry it out, especially since there is no available treatment. Possibly if you had a specific reason for having a problem with defective night vision, (interestingly it is not a DVLA requirement since good headlights make it a non issue.) you could ask your GP to find out if the local neurologist has one.