Refractive Errors

Normal Eye



Clear vision is the result of light entering the cornea (outer window of the eye), passing through the lens (behind the iris), and focusing directly on the retina, at the back of the eye.

Nearsightedness



If the cornea is too steep or the eye is too long, the laser must remove tissue from the center of the cornea to reduce its focusing power. This moves the point of focus from in front of the retina to on the retina.

Astigmatism



If the cornea is more curved in one direction than the other, the laser must remove tissue so that the cornea is more symmetrical. This eliminates multiple focal points and establishes one point of focus on the retina.

Farsightedness



If the cornea is too flat or the eye is too short, the laser must remove tissue from the outer zone of the cornea to make it steeper and increase its focusing power. This moves the point of focus from behind the retina to on the retina.

To learn more about Refractive Surgery contact Albany Eye Associates at 518-434-1042 to schedule an appointment with one of our Board Certified Doctors.