The eye's focusing power. The bending of light wave as they pass from one medium to another Refractive surgery Any surgical procedure that attempts to decrease the patient's refractive error. The procedure is called a radial keratotomy because the incisions resemble the spokes in a wheel. Slit lamp Table-top microscope for examining the eye. A line of same-sized letters on an eye chart that is used to test a patient's vision.
Contrast sensitivity is related to everyday visual performance such as driving a car.
Situations like reading a road sign or seeing in fog and rain are taken into account in the contrast sensitivity test. A medical instrument that produces a powerful beam of light that is focused at close range to remove corneal tissue. Spot scanning lasers use radar technology to track the eye's movement. Between Bowman's membrane and Decemet's membrane. The middle tissue layer of the eye that makes up about 90 percent of the cornea.