The most common cause of night blindness is disease involving the retina in the back of the eye. The retina is made up of two types of light-sensitive cells - rods and cones. Cones are better suited for seeing color and detail, and they function best when there's plenty of light. Rods come into play when light is dim since they're more sensitive to low-light conditions. Blindness at night usually means the rods in the retina aren't working properly.
There are many factors that can cause night blindness, such as Cataracts, Myopia, Poor Nutrition, Side Effects of Medication, and Birth Defects. You must find out the exact reason of the night blindness, then you can treat it with special treatments.
A number of eye conditions can cause night blindness, including nearsightedness-blurred vision when looking at faraway objects
cataracts-a clouding of the eye's lens. Retinitis pigmentosa-when dark pigment collects in your retina, creating tunnel vision.Usher syndrome-a genetic condition that affects both hearing and vision. Older adults have a greater risk of developing cataracts. Seniors are therefore more likely to suffer from night blindness than children or young adults. In rare cases, vitamin A deficiency can also lead to night blindness. Vitamin A, also called retinol, plays a role in transforming nerve impulses into images in the retina. The retina is a light-sensitive area in the back of your eye.Patients who have diseases of the liver or pancreas sometimes cannot absorb large amounts of vitamin A. So, they are at greater risk for developing night blindness, according to Boston's Beth Israel Deaconess Medical Center (BIDMC).Patients who have high blood glucose (sugar) levels or diabetes also have a higher risk of developing eye diseases, such as cataracts.