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Abstract
A retrospective study of two hundred ninety-two surgical strabismus charts was accomplished, looking for changes in refraction following strabismus surgery. A greater than one diopter change in astigmatic refractive error, lasting for at least twelve months, was considered significant.
Two percent (six patients) of the two hundred and eighty patients under age eighteen years and three of twelve patients (25%) over age eighteen demonstrated these changes. This tends to suggest that the incidence of these persistent changes in refraction following strabismus surgery, is greater in the adult population than it is in children.
The greatest number of changes appear to occur when two non-adjacent rectus muscles were operated upon, which has been previously suggested in the literature.
The occurence frequency of these persistent changes in the adult population, suggest that patients undergoing strabismus surgery should be warned that there may be a permanent change in their refractive error. It may also influence the surgeon in choosing which eye to operate on, when a recess/resect procedure is being contemplated in one eye only.