Could one get astigmatism from repeated anesthesia?
General anesthesia—or GA, a medically induced sleep-like state that reduces or eliminates pain during surgery—does have risks. These range from common/mild risks (sore throat, nausea) to those that are much more rare and serious, like stroke. But GA will not introduce or worsen astigmatism or otherwise affect your glasses prescription.
Most people with astigmatism (a refractive error, like nearsightedness or farsightedness) are born with it. Their cornea or lens is anatomically irregular (more oval-shaped than perfectly round). This makes light rays fall short of the retina, which results in blurry vision.
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