Retrospective Comparison of 27-Gauge and 25-Gauge Microincision Vitrectomy Surgery with Silicone Oil for the Treatment of Primary Rhegmatogenous Retinal Detachment

Table 2

Comparison of surgical procedures and results between groups.

	25G	27G	value
Combine cataract surgery, n (%)	9 (16.4)	3 (8.8)	0.489^†
Surgical time (min)	56.7 ± 35.9	55.7 ± 36.1	0.894
Postoperative IOP (mmHg)
1 day	16.9 ± 8.6	15.2 ± 6.7	0.325
1 week	15.3 ± 6.2	14.0 ± 4.6	0.317
Last visit	14.3 ± 3.2	14.6 ± 2.7	0.600
Postoperative BCVA, LogMAR at last visit	1.0 ± 0.8	1.1 ± 0.8	0.780^‡
Visual improvement	−1.0 ± 1.0	−0.6 ± 0.8	0.082^‡
Visual improvement (>0.2 logMAR)	39 (67.2%)	18 (52.9%)	0.173^†
Follow-up period (days, range)	185.7 ± 140.2	186.4 ± 126.7	0.982
Duration of silicone oil filling^#	135.9.2 ± 39.8	132.6 ± 48.6	0.739

BCVA: best correct visual acuity; IOP: intraocular pressure. Independent T test; ^†Pearson’s chi-squared test; ^‡Wilcoxon signed-rank test; ^#retinal redetachment excluded.