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Laser vision correction works by changing the shape of the cornea. In eyes with refractive errors (ns, fs, astig) incoming light rays are out of focus when they arrive at the retina. By changing the shape of the cornea, the incoming light rays are altered so that they are in focus when they arrive at the retina.
While not intended to be an exhaustive treatise on the history of refractive surgery, the following chronicles Dr. Lusby’s involvement and experience with refractive surgery.
Most people think of farsightedness as the need for reading glasses that usually has its onset around age 45. The correct term for this condition is presbyopia. This information will help to elucidate the difference between hyperopia (farsightedness) and presbyopia.
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