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Handheld keratometry readings comparable before, after anesthesia
Handheld keratometry measurements were as reliable in patients under anesthesia as in awake patients, regardless of positioning, according to a study. However, readings trended toward being flatter in patients when muscle relaxants were used at induction. “Corneal curvature measurements are often obtained under general anesthesia in difficult patients and children, especially to calculate intraocular lens power before cataract surgery. Knowing whether these measurements correlate well with measurements in clinic is important,” the authors said.