Night Blindness

Nyctalopia is the medical term for night blindness, a condition in which an individual has difficulty seeing in dim light or darkness.

Vitamin A deficiency is the most common cause of night blindness. Vitamin A is essential for the production of rhodopsin, a pigment in the retina responsible for low-light vision.

Rhodopsin is a pigment in the retina responsible for low-light vision. It absorbs light and converts it into electrical signals that are sent to the brain.

Rods are specialized cells in the retina responsible for night vision. They are more sensitive to light than cones and are more numerous in the peripheral retina.

Dark adaptation is the process by which the eyes adjust to darkness, increasing their sensitivity to low levels of light.

It typically takes around 30 minutes for the eyes to fully adapt to darkness and achieve maximum night vision.

Difficulty seeing in dim light or darkness is a common symptom of night blindness.

Cataracts, a clouding of the eye's lens, are the leading cause of night blindness in developed countries.

Vitamin A supplements can be used to treat night blindness caused by vitamin A deficiency.

Photophobia is the medical term for the condition in which an individual has difficulty seeing in bright light.

Measles is a potential cause of night blindness in children.

Hemeralopia is the medical term for the condition in which an individual has difficulty seeing both in bright light and dim light.

Retinitis pigmentosa is a potential cause of night blindness in adults.

Age-related macular degeneration is a potential cause of night blindness in the elderly.