Do You Have Difficult To See In the Dark? July 10, 2008
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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).
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The most common cause of nyctalopia is retinitis pigmentosa, a disorder in which the rod cells in the retina gradually lose their ability to respond to the light. Patients suffering from this genetic condition have progressive nyctalopia and eventually their daytime vision may also be affected. In X-linked congenital stationary night blindness, from birth the rods either do not work at all, or work very little, but the condition doesn’t get worse.
How to Use an Eye Patch to Improve Night Vision February 2, 2008
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Just For Fun, Try This. An eye patch isn’t just for a poked-out eye. It can also help you to see better in the dark. Here’s how.
Steps
- Get an eye patch or a blindfold to cover one eye so you can’t see any light.
- Put on the blind fold or eye patch on one eye. Leave it there for a few minutes.
- Watch your favorite show with one eye to pass the time.
- Go in a dark room and switch the blindfold over to the other eye that wasn’t covered.
- Look around and you should be able to see everything clearly.
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Tips
- Don’t go in a pitch black room because it won’t work.
Warnings
- Be careful. Don’t trip and get injured while testing this.
- Don’t use both eyes after step 5, because your eye that wasn’t eye patched in the first place will cancel out the effect of the night vision.
Things You’ll Need
- blindfold or eye patch
- dark room
Article provided by wikiHowAlways remember, these articles are for expanding your know-how. Never to diagnose or treat any conditions!
Does Your Vision Get Worse At Night October 11, 2007
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Feature: Why Does My Vision Get Worse at Night?
If you need a nightlight to find your way to the kitchen for a midnight snack, or have difficulty seeing while driving in the evening, you may be suffering from a condition known as night blindness.
People with night blindness see poorly in darkness or dim light but normally when adequate amounts of light are present. The condition is not the nighttime equivalent of true blindness-nonetheless, those who have it know how limiting its effects can be.
Seeing in the dark
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It is estimated that most individuals take about 20 minutes to see adequately in the dark. This time allows your eyes to adjust from the brightness of daylight or indoor lights. As the light dims, your pupils dilate (grow larger) to take in more light.
