Correcting Far-sighted vision: " Some people can see distant objects clearly, but find that nearby objects remain fuzzy no matter how hard they try to focus on them." It's called far-sighted vision. Distant objects from light rays are almost parallel, and needs less refraction to converge them than the light from close objects. Light rays are disverging from close objects as they enter the eye. " A convex lens is needed for the light rays to come into focus exactly on the retina." Far-sighted vision: ( eye has a shorter shape than a normal eye.)
No comments:
Post a Comment