The Pros & Cons Of Wearing Contact Lenses

Short of eye surgery, there are two primary ways to improve your vision: glasses or contact lenses. Contact lenses are worn on the eye, and they work by correcting refractive errors in the eye. They work a lot like glasses to refract and focus light properly so objects appear clearly. Contact lenses can fix the same vision problems as eyeglasses: nearsightedness, farsightedness, and astigmatism.

Nearsightedness happens when light rays focus too early in the eye and form a focal point in front of the retina instead of on it. Farsightedness occurs when the light rays can't form a focal point before reaching the retina. Astigmatism causes an abnormal curvature that distorts images.