Abstract
Analysis of surgical success and intraocular pressure (IOP), best-corrected visual acuity (BCVA), and antiglaucomatous medication (AGM) changes between segmental 180-degree and 360-degree gonioscopy-assisted transluminal trabeculectomy (GATT) in patients with pseudoexfoliation glaucoma (PEXG) showed no significant difference. To compare surgical outcomes of segmental 180-degree and 360-degree GATT in patients with PEXG. Prospective, comparative study of 65 PEXG eyes, who underwent segmental 180-degree GATT (GATT 180-degree group, 31 eyes) and 360-degree GATT (GATT 360-degree group, 34 eyes) in a tertiary academic center over a 12-month of follow-up. Primary outcome was qualified and complete surgical success rates for criterion A (IOP <18mm Hg and >30% reduction) and criterion B (IOP <15mm Hg and >30% reduction). Secondary outcome measures included IOP reduction, BCVA change, AGM use, and postoperative complications. The probabilities of qualified and complete success rates both for criteria A and B did not significantly differ between the groups ( P > 0.05). IOP and BCVA levels were similar at each time point ( P > 0.05). IOP reduction was 59.3 ± 9.5% in the GATT 180-degree group and 55.8 ± 18.1% in the GATT 360-degree group ( P = 0.33). No significant difference in the mean number of AGM was present at the 12-month visit (1.2 ± 1.1 in GATT 180-degree group vs 1.5 ± 1.2 in GATT 360-degree group, P = 0.25). Significantly higher incidences of postoperative hyphema and IOP spikes were observed in the GATT 360-degree group ( P = 0.01 and P = 0.008, respectively). Both segmental 180-degree and 360-degree GATT similarly reduced IOP and AGM with comparable surgical success rates in patients with PEXG at the end of 12 months. Postoperative hyphema and IOP spike rates were significantly higher after 360-degree GATT. Segmental 180-degree GATT may be sufficient to adequately modulate IOP with a lower incidence of postoperative complications in PEXG.
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