Comparison of horizontal and vertical intraocular lens fixation in the flanged intrascleral haptic fixation technique

PURPOSE: To compare the effect of fixation of the intraocular lens (IOL) in horizontal (H) and vertical (V) planes on visual outcomes in the flanged intrascleral haptic fixation technique. SETTING: Yozgat City Hospital, Yozgat, Türkiye. DESIGN: Retrospective study. METHODS: This retrospective study was conducted in 64 eyes of 64 patients (Group H: 38, Group V: 26). Surgical indications were aphakia and single-piece or 3-piece IOL subluxation. The reference points for fixation were the 3 and 9 o'clock quadrants for Group H and the 6 and 12 o'clock quadrants for Group V. Preoperative, intraoperative, and 6-month postoperative data of all participants were analyzed. RESULTS: Both groups had significantly increased visual acuity at postoperative 6 months (P < .05); however, no significant differences were found regarding postoperative 6-month visual acuity, refraction values, or lenticular astigmatism (P > .05). The groups also did not significantly differ in mean keratometry, anterior chamber depth, horizontal corneal radius, axial length, and intraocular pressure measurements (P > .05). Although there were no intraoperative or late postoperative (>3 months) complications (P > .05), a significant difference was noted for early postoperative (