Night blindness is poor vision at night or in dim light. Doctors now know that it can result from nutritional factors, genetics, uncorrected nearsightedness or an eye disease such as cataracts, macular degeneration or retinitis pigmentosa This occurs because the individual with myopia will commonly become even more nearsighted as the pupil dilates at night. People with night blindness (also called impaired dark adaptation) see poorly in the darkness but see normally when adequate amounts of light are present People with night blindness (also called impaired dark adaptation) see poorly in the darkness but see normally when adequate amounts of light are present . And other people simply can't see in the dark. I can name several different reasons for this." For example, some people-though this is rather uncommon-have what is known as congenital stationary night blindness; they're born with the problem. On the other hand, patients being treated with glaucoma medications which constrict the pupil (e.g., pilocarpine), will also frequently have night blindness, because the small pupil allows minimal light to enter the eye. Retinitis pigmentosa , a retinal degenerative disorder, also commonly presents with night blindness.It is important to have a complete eye exam to determine the cause, which may be treatable.

And for more information on this topic visit the source site:
http://www.cosmeticsdia ry.com/eye-health/night-blindn ess.htm

Answered by Dinesh , an ibibo Master, at 7:30 AM on August 14, 2008

EVENING BLINDNESS MEANS A PERSON CANNOT SEE AFTER SUNSET TIME..THIS CONDITION IS SOMETIMES TEMPORARY,AND MAY DISAPPEAR WITH TIME.BUT SOMETIMES IT IS PERMANENT IN SOME PERSON.THERE IS NO MEDICAL OR SURGICAL TREATMENT FOR THIS TYPE OF CONDITION.AS THIS HAS TO BE TREATED THROUGH NATURAL PROCESS ONLY.

Answered by Ivan Dantes , an ibibo Citizen, at 4:30 PM on August 13, 2008

Nyctalopia (Greek for "night blindness") is a condition making it difficult or impossible to see in relatively low light. It is a symptom of several eye diseases. Night blindness may exist from birth, or be caused by injury or malnutrition (for example, a lack of vitamin A). Take vitamin A in diet,Take vitamin a supplement and go for cataract removal .

Answered by alok , an ibibo Master, at 2:57 PM on August 13, 2008

Hi Seshan, i guess you are referring to the night blindness. It is a condition making it difficult or impossible to see in relatively low light. It is a symptom of several eye diseases. Night blindness may exist from birth, or be caused by injury or malnutrition (for example, a lack of vitamin A).
Treatment for night blindness will depend upon its cause. Treatment may be as simple as a new prescription for your eyeglasses or switching glaucoma medications, or it may require surgery in cases of cataracts.

Answered by Vinay Kiran , an ibibo Specialist, at 2:04 PM on August 13, 2008

Evening blindenss or night blindness is the same and in medical terms it's called 'Nyctelopia', most commonly occurs due to vitamin A deficiency. Preventive administration of vitamin A to preschool school children can eradicate blindness due to vitamin A deficiency.
The current recommendations by the Government of India are to administer first dose of preventive vitamin A 100,000 IU at 9 months ( along with measles vaccination) followed by second dose of 200.000 IU around the age of 15-18 months (along with first boostre of DPT/OPV) and three more doses at an interval of every 6 months.

Answered by Saurav , an ibibo Citizen, at 12:09 PM on August 13, 2008

well seshan evening blindness is Any type of vision loss (e.g. blindness, blurred vision, double vision, etc.) is a symptom of great concern. Many of the causes are very serious medical conditions ... more about Night blindness.
Night blindness: Poor vision in darkness or dim light. More detailed information about the symptoms, causes, and treatments of Night blindness is available below. Symptoms of Night blindnessclick here
Night blindness
Poor vision in dim light
Associated symptoms include:
Dry eyes
Blurred vision
Treatments for Night blindnessVitamin A supplements
Treatment of any underlying cause
Vitamin A - possibly used for related vitamin A deficiency


for more inf check source http://www.wrongdiagnosis.com/n/nig ht_blindness/intro.htm

Answered by sanjay , an ibibo Guru, at 11:24 AM on August 13, 2008

IT TERM IS NOT EVENING BLINDNESS BUT NIGHT BLINDNESS .
People with night blindness (also called impaired dark adaptation) see poorly in the darkness but see normally when adequate amounts of light are present. The condition does not actually involve true blindness, even at night.Symptoms include difficulty seeing when driving in the evening or at night, poor vision in reduced light, and feeling that the eyes take longer to “adjust” to seeing in the dark.

TREATMENT :Night blindness may be an early sign of vitamin A deficiency. Such a deficiency may result from diets low in animal foods (the main source of vitamin A), such as eggs, dairy products, organ meats, and some fish. Low intake of fruits and vegetables containing beta-carotene, which the body converts into vitamin A, may also contribute to a vitamin A deficiency. TAKE ADEQUATE AMOUNT OF VITAMIN A IN DIET,TAKE VITAMIN A SUPPLEMENT AND GO FOR CATARACT REMOVAL IF YOU HAVE.
SOURCE SITE :http://www.healthvitaminsguid e.com/deficiencies/night-blind ness.htm

Answered by Sanya Tahir , an ibibo Master, at 10:36 AM on August 13, 2008