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A cataract is an opacity of the lens of the eye, which can cause impaired vision or blindness. Because cataracts are a common result of normal aging, most people over age 60 have cataracts to some degree. In fact, cataract surgery is the most common surgical procedure in the US. One early remedy, developed thousands of years ago, involved using a needle to pierce the eye and push the lens out of the field of vision. In what regions is this dangerous, often blinding, technique still employed? Discuss
Source: The Free Dictionary