Night blindness, also known as nyctalopia, is a condition that makes it difficult to see in low light conditions, such as at night or in dimly lit rooms. It can be caused by a variety of factors, including underlying medical conditions, the use of certain medications, and nutritional deficiencies.
One common cause of night blindness is a deficiency in vitamin A, which is essential for the proper functioning of the retina, the light-sensitive layer at the back of the eye. Vitamin A deficiency can be caused by a poor diet or by certain medical conditions, such as inflammatory bowel disease, that affect the body’s ability to absorb nutrients.
Other causes of night blindness include cataracts, which are cloudy areas in the lens of the eye that can cause light to scatter, and retinitis pigmentosa, a genetic disorder that affects the retina. Night blindness can also be a side effect of certain medications, such as corticosteroids, which are used to treat a variety of medical conditions.
Treatment for night blindness depends on the underlying cause. If the condition is caused by a deficiency in vitamin A, supplements may be recommended to restore normal levels. If the condition is caused by a medical condition or the use of medications, treatment may involve addressing the underlying cause or adjusting the dosage of the medication. In some cases, eyeglasses or contact lenses may be recommended to help improve vision in low light conditions.