Within the eye, the cornea and lens work together as a system to ensure incoming light rays are focused onto the surface of the retina. When vision is perfect, the cornea and the lens work optimally to project the image to the back of the eye. If there is a slight imbalance between the lens, the cornea or the length of the eye, then focus will be slightly reduced. As we age, the lens stops working as effectively as it did in our 20’s and 30’s, causing previously good vision to become blurry. This is called presbyopia. During RLE, the natural lens is removed and replaced with an artificial lens. This artificial lens is custom ordered to match your prescription so that the new lens can return your vision back to 20/20 or better.