Astigmatism HCT II. Astigmatism An abnormal shape or curvature of the cornea that causes blurred vision. ◦This causes light rays to focus on multiple.

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Presentation transcript:

Astigmatism HCT II

Astigmatism An abnormal shape or curvature of the cornea that causes blurred vision. ◦This causes light rays to focus on multiple areas of the retina

Cover one eye and look at the chart. Then close the other eye and look at the chart again. If some lines look grey, bold or blurred you may need your eyes checked.

Treatment Eyeglass- lenses are shaped to counteract the shape of the cornea or lens that's causing blurred vision. Contact lenses-All contact lenses rotate when a person blinks. "toric" lenses turn back to their normal position to treat astigmatism Laser eye surgery (LASIK). the surgeon uses a laser to reshape the cornea so it can focus light rays better

Place yourself at approximately 1m from the screen. Cover one eye with your hand, without pressing on the lid, and take the test. Cover the other eye and begin the test again.