The study determined benchmark levels for the postoperative achievement of maximum absolute deviation of 0.5 diopter from target refraction and best-corrected visual acuity of at least 0.8. Researchers looked at 1,685 patients with uncomplicated, age-related cataracts who underwent unilateral cataract surgery between Jan. 2007 and Aug. 2008. They found maximum absolute deviation of 0.5 diopter from target refraction was achieved in 80 percent of cases and visual acuity of 0.8 or more was reached in 87 percent.
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