Patients with severe night blindness also experience a decline in vision during the day. Night blindness refers to the blurriness or complete inability to see in the dark or dimly lit environments, causing difficulties in movement. In severe cases, vision can also decline during the day. Night blindness can be categorized into congenital, acquired, and temporary night blindness. Congenital night blindness is mostly related to congenital genetic factors, where patients inherently lack the ability to synthesize rhodopsin, leading to night blindness. Acquired night blindness is often due to diseases of the retina or other eye diseases, and it is recommended to actively treat the primary disease. Temporary night blindness is mostly due to a lack of Vitamin A in the diet, or due to certain digestive system diseases affecting Vitamin A absorption, and it is advised to supplement Vitamin A and other treatments as prescribed by a doctor.