Biomaterial Database

Refractive changes in children under general anesthesia. 1981

R A Saunders, and C J Andrews

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.

UI	MeSH Term	Description	Entries
D007223	Infant	A child between 1 and 23 months of age.	Infants
D007432	Intraoperative Period	The period during a surgical operation.	Intraoperative Periods,Period, Intraoperative,Periods, Intraoperative
D008297	Male		Males
D009216	Myopia	A refractive error in which rays of light entering the EYE parallel to the optic axis are brought to a focus in front of the RETINA when accommodation (ACCOMMODATION, OCULAR) is relaxed. This results from an overly curved CORNEA or from the eyeball being too long from front to back. It is also called nearsightedness.	Nearsightedness,Myopias,Nearsightednesses
D011184	Postoperative Period	The period following a surgical operation.	Period, Postoperative,Periods, Postoperative,Postoperative Periods
D012029	Refraction, Ocular	Refraction of LIGHT effected by the media of the EYE.	Ocular Refraction,Ocular Refractions,Refractions, Ocular
D002648	Child	A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL.	Children
D002675	Child, Preschool	A child between the ages of 2 and 5.	Children, Preschool,Preschool Child,Preschool Children
D005260	Female		Females
D006221	Halothane	A nonflammable, halogenated, hydrocarbon anesthetic that provides relatively rapid induction with little or no excitement. Analgesia may not be adequate. NITROUS OXIDE is often given concomitantly. Because halothane may not produce sufficient muscle relaxation, supplemental neuromuscular blocking agents may be required. (From AMA Drug Evaluations Annual, 1994, p178)	1,1,1-Trifluoro-2-Chloro-2-Bromoethane,Fluothane,Ftorotan,Narcotan