People need glasses if the lenses in their eyes cannot focus the light rays properly on the retina. The image they see looks fuzzy. Wearing glasses can help correct their sight. People can also wear contact lenses thin plastic discs that rest on the surface of the eye and act like the lenses of glasses to correct their vision.
Answers
Arnav gupta
People need glasses if the lenses in their eyes cannot focus the light rays properly on the retina. The image they see looks fuzzy. Wearing glasses can help correct their sight. People can also wear contact lenses thin plastic discs that rest on the surface of the eye and act like the lenses of glasses to correct their vision.