Influences of 27-Gauge Vitrectomy on Corneal Topographic Conditions

To evaluate the influences of 27-gauge vitrectomy on corneal topographic conditions. method. fifty-six eyes of 56 patients undergoing 27-gauge vitrectomy were retrospectively studied. twenty-three eyes with epiretinal membrane (erm),23 eyes with macular hole (mh),and 10 eyes with proliferative diabetic retinopathy (pdr) were included. forty-five of the 56 eyes underwent 27-gauge phacovitrectomy (group 1),and the remaining 11 eyes underwent 27-gauge vitrectomy alone (group 2). corneal topography was obtained with a wave-front analyzer preoperatively and at 1 and 3 months postoperatively. the corneal topographic parameters evaluated were the average corneal power,regular astigmatism,spherical aberration,and higher-order aberration (hoa). results. in between-group analyses of groups 1 and 2,no significant differences were observed regarding the changes of the 4 parameters from the baseline to 1 and 3 months postoperatively. no significant differences in the changes of all parameters from the baseline to 1 and 3 months postoperatively were also observed between mh group and the other two groups. a significant difference in the change of hoa from the baseline to 1 month postoperatively was observed between erm and pdr group however,the difference disappeared at 3 months. conclusion. 27-gauge vitrectomy did not induce substantial changes in the corneal topographic conditions. © 2017 takafumi hirashima et al.