Help to make Alexa smarter on Alexa Answers. Sign in with Amazon


How do your eyes work?

Light enters the eye the pupil. The iris (the coloured part) controls how much light is let in. Light passes through the lens and is focused on the retina where photoreceptors turn the light into electrical signals that travel along the optic nerve to the brain where they are converted to images.

{{ relativeTimeResolver(1615545049998) }}

Points points 18
Rating 0

Similar Questions

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world