According to the National Eye Institute, close to 3.3 million people in America who are 40 years or older are blind or have low vision, which translates to 1 in every 28 people. According to the National Eye Institute, the four most common eye problems that Americans face are cataracts, glaucoma, diabetic retinopathy and age-related macular degeneration.
LASIK surgery can be successfully used to correct hyperopia or farsightedness. First, a thin flap is created on the cornea with the aid of laser or blade. The flap is then raised and laser is directed at the peripheral corneal tissue. The laser treats the corneal periphery and changes the cornea to make it steeper. The laser is controlled precisely to only remove the required amount of corneal tissue without causing any damage to the surrounding tissues. The flap is then re-placed, which makes quick healing possible.
The focusing ability of the eye is measured in diopters. Cataract surgeries usually remove the natural lens of the eye and this causes the eye to lose around 18 diopters, which is equivalent to one-third of the eye’s ability to focus. This loss is usually compensated by the cataract surgeon through implantation of an artificial intraocular lens (IOL).