Evaluation of IOP altration in restrictive and nonrestrictive strabismic patients patients before and after strabismus surgery.

Fifty six eyes of 41 patients undergone extra ocular recession or resection surgery were enrolled in the study. IOP was measured before and after surgery. The changes in IOP were analyzed and compared between the two kinds of strabismus.

7.1% had restrictive strabismus and the others were non-restrictive. 5% of our patients underwent resection of the muscles and 55% recession and 24 had both surgical methods . The mean IOP was 12 (SD 87.1) mm Hg when measured immediately before and 11(SD 1.16) mm Hg when during surgery, which decreasing to 10.32 (SD 2.59) mm Hg when measured 5 days post op. and 11.15 (SD 1.59) mm Hg and 11.53 (SD 1.92) mm Hg when measured one month and six months after surgery ; respectively. there was not statistically significant difference between restrictive and non-restrictive groups (p0.05). but it was showed significant statistical difference between the 1st and 6th months after surgery(p0.05).

IOP changes after strabismus surgery is not statistically meaningful and also ,is not significantly differ between restrictive and non-restrictive strabismus .