Night Blindness

Night blindness, or nyctalopia, is a condition where the eyes struggle to adapt to low-light conditions, impairing vision at night or in dim environments. It often results from a deficiency in vitamin A, which is crucial for the synthesis of rhodopsin, a photopigment in the retina that aids night vision. Other causes include genetic disorders like retinitis pigmentosa, cataracts, and certain medications. Symptoms include difficulty seeing in low light, requiring more time to adjust from bright to dark settings, and peripheral vision loss. Diagnosis involves a comprehensive eye exam and possibly blood tests to check vitamin levels. Management includes addressing the underlying cause, such as supplementing vitamin A or treating cataracts. Early intervention is crucial to prevent progression and improve quality of life.