Cena Channel Side – From Our Vision To Yours

For correct vision to occur, the cornea and lens (located at the front of the eye) must cause light rays to strike the retina (at the back of the eyeball) and transmit information to the brain through the optic nerve. Several visual defects can occur that make it difficult for the eye to focus images of the outside on the retina, causing a faulty image of objects to form. Refractive defects are myopia, hyperopia, astigmatism, or presbyopia. On the other … Continue reading “Why do we lose visual acuity?”