How do glasses work? Will glasses weaken the eyes?
The eye is like a camera in that the front part of the eye focuses images on the back part of the eye (retina). If the eye is longer or shorter than average, or if the cornea is shaped differently, the image is blurry on the retina. Glasses or contacts correct for the length of the eye and the shape of the cornea, allowing a clear image to get to the retina. Glasses do not ‘weaken’ the eyes. Many people feel they become dependent on the glasses, but this is just that they have become accustomed to seeing clearly and enjoy clear vision.
