Abstract
Purpose :
To retrospectively compare the safety and effectiveness of 27-gauge (27G) microincision vitrectomy surgery (MIVS) with 25-guage (25G) MIVS for treating primary rhegmatogenous retinal detachment (RRD).
Methods :
One hundred and twenty-nine eyes of 129 patients with RRD underwent MIVS from May 1, 2015 to June 31, 2017 and were included in this study. Eighty-four eyes underwent 25G vitrectomy and 45 eyes for 27G vitrectomy, respectively. The analysis included characteristics of the patients, surgical time, main clinical outcomes, and rate of complications.
Results :
The mean surgical times was 69.9 ± 41.2 minutes for the 25G group and 61.7 ± 34.1 minutes for the 27G group, and there was no significant difference (p = 0.254) between the two groups. The primary anatomical success rate after a single operation was 96.4% and 91.1% for 25G group and 27G groups respectively (p = 0.388). Baseline and final visit BCVA were 1.88 ± 1.09 and 0.95 ± 0.75 in 25G group, and 1.68 ± 1.00 and 1.04 ± 0.79 in the 27G groups. Postoperative BCVA increased significantly in both groups (p < 0.001). However, there was no significant differences in terms of visual improvement (> 0.2 logMAR) ratio between the two groups (P = 0.177). No severe intraoperative complication was observed. Iatrogenic retinal breaks occurred in 2 eyes (2.4%) in the 25G group and 1 eye (2.2%) in the 27G group during the peripheral vitreous base shaving. The transient ocular hypertension (>25 mmHg) on day 1 postoperatively was 15.5% in 25G group, and 11.1% in 27G group, respectively (p=0.495).
Conclusions :
This study found no significant anatomical or functional difference between 27G PPV and 25G PPV in the treatment of primary RRD. Therefore, 27G vitrectomy would be a safe and effective surgery for repairing of primary RRD.
This is an abstract that was submitted for the 2018 ARVO Annual Meeting, held in Honolulu, Hawaii, April 29 - May 3, 2018.