Today certain vision problems such as nearsightedness, farsightedness and astigmatism can be reduced or eliminated surgically. LASIK (laser assisted in situ keratomileusis) offers a number of benefits over other forms of laser vision correction because it is performed under a protective layer of corneal tissue. As a result, there is less surface area to heal, less risk of scarring, less risk of corneal haze, less postoperative discomfort, less postoperative need for medications, and vision returns more rapidly, often within a day or so. LASIK can also treat a higher range of vision errors. Although postoperative results vary, most patients are able to pass a driver’s license test without their glasses or contact lenses.
What is your refractive error?
A refractive error is a defect in the way light passes through the eye. In normal vision, light enters the eye through the cornea and is focused at a single point on the retina at the back of the eye. With a refractive error, light rays do not refract (bend) properly to achieve a single focus point. Instead, light rays focus in front or behind the retina, or at two different points. Refractive errors usually result from a defect in the length of the eye or shape of the cornea.
What is Nearsightedness (Myopia)?
In nearsightedness the cornea is often too steep and light rays focus in front of the retina. Near vision is clear and distant vision is blurry
What is Farsightedness (Hyperopia)?
In farsightedness the cornea is often too flat and light rays focus behind the retina. Both near and distant vision are usually blurry.
What is Astigmatism?
With astigmatism the curve of the cornea is irregular and egg shaped, causing light rays to focus at multiple points and resulting in blurred or double vision at all distances.
What is Presbyopia?
At birth, the focusing lens inside the eye is soft and flexible allowing it to change shape to focus on either near objects or distant objects. As we age, the lens gradually hardens, becoming resistant to changes in shape. About 35 to 45 years of age, the eye has increasing difficulty focusing. This loss of focusing ability, or presbyopia, results in blurred or distorted reading or near vision. Bifocals or reading glasses are used by people with presbyopia.
Are you a candidate for laser vision correction?
You are a good candidate if ...