The Changes Of Refractive Status And Anterior Segment Parameters After Strabismus Surgery

Purpose: To investigate the effects of strabismus surgery on the refractive status and anterior segment parameters,meanwhile to conduct a research on the causes of these changes.Methods: This was a retrospective study about 65 patients(104 eyes)who underwent strabismus surgery by a single surgeon from February 2017 to May 2018.The patients were divided into 4 groups.Group I: unilateral lateral rectus recession(40 eyes),Group II: unilateral medial rectus recession(16 eyes),Group III: monocular lateral rectus recession and medial rectus resection(30 eyes),Group IV: disinsertion of the inferior oblique(18 eyes).Refractive status and anterior segment parameters were measured at 1 day before operation,1 week,1 month after operation.Results: Spherical equivalent significantly showed a significant change during postoperative 1 week unilateral medial /lateral rectus recession and monocular lateral rectus recession and medial rectus resection(P<0.05),and it still showed a statistical changes during postoperative 1 month unilateral medial rectus recession,and showed amyopic shift.J0 displayed a shift in the with-the-rule direction in unilateral medial / lateral rectus recession lasted to the first month after surgery(P<0.05).J45 had no significant change in all groups as time passed by.Flattest keratometry changed significantly only in unilateral medial rectus recession lasted to the first month after surgery(P<0.05).Patients manifested statistically significant changes in steepest keratometry at 1week after operation in horizontal rectus surgery,but returned to the baseline by 1 months after surgery.There was no change in disinsertion of the inferior oblique.Conclusions: Refractive changes are a significant side effect of strabismus surgery,therefore,patients should be informed about it prior to surgery and the appropriate time for optometry should be chosen according to the different surgical methods after surgery.