GED Science Practice

What is the term for slow recovery of vision after flashes of bright light at night, an early symptom of vitamin A deficiency?

1. Nearsightedness

2. Night blindness

3. Molting

4. Natural selection

The correct answer is: Night blindness

The term for slow recovery of vision after flashes of bright light at night is night blindness. This condition specifically refers to difficulty seeing in low light or dark conditions and is often linked to vitamin A deficiency. Vitamin A is crucial for the production of rhodopsin, the pigment in the retina that helps the eyes adjust to darkness. When there is an insufficient amount of vitamin A, the eyes struggle to recover quickly from bright light exposure, leading to difficulty seeing in the dark. Nearsightedness pertains to the inability to see distant objects clearly but doesn't involve the recovery of vision in low light. Molting is related to shedding skin in some animals and has no relevance to vision or vitamin A. Natural selection is a biological principle involving the process by which certain traits become more common in a population, unrelated to visual function or deficiencies. Hence, night blindness is the accurate term for the condition described.