Surgically induced XXXX after 23-gauge transconjunctival sutureless vitrectomy.

@entity940 @entity1 @entity231
PURPOSE: To evaluate surgically induced @entity940 (SIA) after 23-gauge transconjunctival sutureless vitrectomy (23GTSV). METHODS: We studied 56 @entity1 (56 eyes) who underwent 23GTSV between January 2006 and December 2007 and who underwent preoperative and 1- and 3-4-months postoperative corneal topography. Fifteen of the 56 @entity1 underwent combined 23GTSV and @entity231 surgery. SIA was evaluated with Naeser's polar method using the simulated keratometric values obtained with corneal topography. Preoperative and postoperative KP and DeltaKP values were compared in the 23GTSV only group and the combined 23GTSV and @entity231 surgery group. RESULTS: There were no significant serial changes between the preoperative and postoperative Sim K @entity940 or KP values in the 23GTSV only group. In the 23GTSV only group, the DeltaKP (90) was negative (-0.10+/-0.78) at 1 month postoperatively, but it became positive (0.13+/-0.85) at 3-4 months postoperatively. The DeltaKP (135) showed serially decreasing negative values, -0.02+/-0.80 at 1 month postoperatively and -0.08+/-0.60 at 3-4 months postoperatively. In the combined @entity231 surgery group, the 1- and 3-4-month postoperative DeltaKP (135) values were -0.64+/-0.50 and -0.71+/-0.48, respectively, which represented a significant decrease compared with the 23GTSV only group (P<0.001, Mann-Whitney U-test). Although statistically insignificant, the DeltaKP (135) value was more negative in the sclerotomy-sutured group (n=6) than the sclerotomy non-sutured group (n=35) at 1 month postoperatively (-0.67+/-1.19 vs 0.09+/-0.67, P=0.110, Mann-Whitney U-test). CONCLUSION: The 23GTSV does not induce significant SIA in the early postoperative period.
