
Understanding Refractive Errors: Myopia, Hyperopia, Presbyopia, and Astigmatism
Clear vision relies on a delicate optical process. When light enters the eye, it passes through the clear outer cornea and the crystalline lens, focusing directly onto the retina—the light-sensitive layer of tissue lining the back of the eyeball. When the structural shape of the eye or cornea prevents light from bending (refracting) precisely onto […]








