Common Vision Problems LASIK Can Correct:
There are three main parts to the human eye: the cornea, the lens, and the retina. The retina is like the film on a camera. In the case of normal vision, the cornea refracts (bends) light so it can be directed correctly through the lens and onto the retina, accounting for 70% of the eye’s focusing ability. When we experience vision problems requiring glasses, these are usually the result of disorders or irregularities of the shape of the cornea. LASIK solves these vision problems by using lasers to reshape the curvature of the cornea so that normal, clear, sight is obtained.
Astigmatism is the inability to focus clearly at any distance due to an irregular or misshapen cornea. With astigmatism the cornea is shaped more like a football than a basketball and light rays focus at differing points on the retina, causing images to overlap and blurred vision. LASIK corrects this oval shape, making the cornea more round, and achieving clear vision. Read more about astigmatism and our exclusive AstigmaClear™ vision correction treatment.
Nearsighted people see close objects clearly – but not distant objects. In nearsightedness the curve of the cornea is too steep, or the eye itself is somewhat elongated, resulting in images being focused in front of the retina. LASIK corrects this condition by flattening the curvature of the cornea, which allows the cornea to focus images exactly on the retina thus achieving clear vision.
Farsighted people see distant objects better than up close ones, however objects at all distances are blurred. In farsightedness the shape of the cornea is too flat, causing light rays to focus behind the retina. LASIK corrects this condition by shaping the outer area of the cornea so that it focuses images correctly.