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Causes
Causes
What causes nearsightedness?
Most nearsightedness is caused by a natural change in the shape of the eyeball. Less often, nearsightedness may be caused by a change in the cornea or the lens.
These problems cause light rays entering the eye to focus in front of the retina. Normally, light focuses directly on the retina.
Clinical Trials
Clinical trials are research studies that evaluate a new medical approach, device, drug, or other treatment. As a Stanford Health Care patient, you may have access to the latest, advanced clinical trials.