Night blindness may be caused by a deficiency of?

Night blindness is a medical condition characterized by reduced visual acuity in low light or nighttime. It is often associated with a lack or impairment of the rod cells in the retina, specialized for low-light conditions. The most common cause of night blindness is a deficiency of vitamin A, particularly vitamin A1 (retinol).

Vitamin A is essential for the production of a pigment called rhodopsin, which is present in the rod cells of the retina. Rhodopsin is responsible for converting light into electrical signals that are transmitted to the brain. Without sufficient vitamin A or rhodopsin, rod cell function is compromised, making it challenging to see clearly in dim lighting.