What causes poor night vision?
Difficulty with night vision can stem from a number of different problems ranging from exposure to the sun and vitamin deficiencies to a chronic disease such as diabetes: • Cataracts. The lens of the eye is located behind the pupil. Over a lifetime, the process of cell turnover inside the lens produces debris that gradually builds up. This creates a cataract. Painless and progressive, cataracts slowly cloud the lens. The first symptom of cataracts is usually decreased night vision. The light distortion caused by cataracts also frequently produces halos around lights — again, mostly at night. Blurry vision is also common. • Vitamin A deficiency. Vitamin A is an essential vitamin that’s found in carrots and yellow or green leafy vegetables. It helps keep the retina — back of the eye — healthy. Vitamin A deficiency is a rare cause of night blindness in the U.S. It occurs mostly in people with problems absorbing nutrients from the gut. This might occur as a result of different diseases
Difficulty with night vision can also stem from exposure to the sun and vitamin deficiencies to a chronic disease such as diabetes: • Cataracts. The lens of the eye is located behind the pupil. Over a lifetime, the process of cell turnover inside the lens produces debris that gradually builds up. This creates a cataract. Painless and progressive, cataracts slowly cloud the lens. The first symptom of cataracts is usually decreased night vision. The light distortion caused by cataracts also frequently produces halos around lights — again, mostly at night. Blurry vision is also common. • Vitamin A deficiency . Vitamin A is an essential vitamin that’s found in carrots and yellow or green leafy vegetables. It helps keep the retina — in the back of the eye — healthy. Vitamin A deficiency is a rare cause of night blindness in the U.S. It occurs mostly in people with problems absorbing nutrients from the gut. This might occur as a result of different diseases and conditions such as Crohn’s
