Background & Purpose: In previous studies success rates of BLRree. and R& R surgeries on. basic exotropic patients have been reported 43-79% and 82% respectively. The aim of ibis study was comparison of these two techniques of surgeons on our XT. patients at Imarn Hossein Medical Center.Method & Pantients: After filling up personal and family characteristics form, complete eye examinations (B.C.V.A- Cycloretfaction- EOM- XT at 6m and 33 cm - slit and funds exam) were performed. Measurements were repeated at least 1.5 months after surgeries. Because of lower vision in R&R group, 5 pd more surgery were done to stabilize the deviated eye after operation. The patients were matched (range of age, sex, S.E of reflection, sergeon, followup). The results were interpretated by T, paired T and x and fisher tests.Results: 26 patients were in BLRree. and 21 pts. Were in R&R group. Their ages were 9±7 and 19±9 years, preop xT were 29±8 and 36±17 which decreased to 5±7 and 5±10 pd respectively. Success rates of these techniques were not different statistically. In BLRree. Group 69%,ortho (+8 pd) 27% under and 4% over and In. P&R group 81% ortho, 14% under and 5% over were seen.Conclusion: In our study these two methods of surgeries had no different statistically. More success rate in R&R group (81%) was due to both effects of 5 pd more operation and stabilizing effect of MR Rec.against it's direct antagonist muscle recession.