SF is a 15-year-old girl with intractable seizures who had been treated with various antiseizure medications, including a new experimental drug. She had not worn lens correction in the past but presented with complaints of a recent dramatic decrease in vision in both eyes. Examination found uncorrected vision OU of 20/400 and a refraction of −8.00 diopters OD and −7.50 diopters OS. Keratometry measured 44.00 by 43.50 in her right eye and 44.50 by 44.00 in her left. A-scan biometry was performed and the axial length of the right eye measured 23.49 mm and the left measured 23.25 mm (Fig. 161).
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