title: Refractive changes in children under general anesthesia.
abstract: Twenty-five pediatric patients were refracted without topical cycloplegic agents following induction of halothane anesthesia. Comparison of the intraoperative refraction with a preoperative, outpatient, cycloplegic refraction revealed a variable increase in myopia ranging from 0.25 to 5.50 diopters under general anesthesia. Several patients showed a significant asymmetry in myopic shift between fellow eyes, suggesting that a central accommodative mechanism may not be entirely responsible for the refractive changes observed.
mesh_terms: D000768:Anesthesia, General; D002648:Child; D002675:Child, Preschool; D005260:Female; D006221:Halothane; D006801:Humans; D007223:Infant; D007432:Intraoperative Period; D008297:Male; D009216:Myopia / Q000175:diagnosis; D011184:Postoperative Period; D012029:Refraction, Ocular
chemical_list: D006221:Halothane