What is night-blindness? why do people get it? any gene connection?!
Question: Well, within your eyes you have light receptors, rods and cones, that detect light and send the information back to the brain. Rods detect light or no light (think, black and white) and the cones detect color.
What I've been told in my physiology class is that Vitamin A plays a role in this. Carrots are a good source of beta-carotene, which gets converted into Vitamin A to be used by our eyes. However, eating carrots won't make bad vision better, it will only keep your night vision from getting worse. Plus, if you eat too many carrots, your skin will turn orange.
Never heard of it as being a genetic condition though. There are also babies, if they are born with cataracts, doctors might recommend they get surgery ASAP. This is because if their ability to get as much light into the eye as possible is blocked. So, the rods/cones don't get stimulated like they should and if they "don't use them, they lose them." Even though they will still have the rods and cones, they won't function as they get older.
For more info, ask an ophthalmologist. Taking a physiology or a physiological psychology course can help also. In mine we also covered why you still see the shape of something after starring at it for a while in addition to other eye-related stuff.
Hope this helped.
Answers: Well, within your eyes you have light receptors, rods and cones, that detect light and send the information back to the brain. Rods detect light or no light (think, black and white) and the cones detect color.
What I've been told in my physiology class is that Vitamin A plays a role in this. Carrots are a good source of beta-carotene, which gets converted into Vitamin A to be used by our eyes. However, eating carrots won't make bad vision better, it will only keep your night vision from getting worse. Plus, if you eat too many carrots, your skin will turn orange.
Never heard of it as being a genetic condition though. There are also babies, if they are born with cataracts, doctors might recommend they get surgery ASAP. This is because if their ability to get as much light into the eye as possible is blocked. So, the rods/cones don't get stimulated like they should and if they "don't use them, they lose them." Even though they will still have the rods and cones, they won't function as they get older.
For more info, ask an ophthalmologist. Taking a physiology or a physiological psychology course can help also. In mine we also covered why you still see the shape of something after starring at it for a while in addition to other eye-related stuff.
Hope this helped.
Night blindness is like having a hard time seeing at night, and your eyes have a hard time going from darkness to light. When I am driving at night it hurts my eyes when I see headlights of another car. It is not a genetic thing, people can have it from birth, or from an accident or other traumas.