The 23G and 20G vitrectomy for patients with diabetic retinopathy

Abstract

Objective To compare the clinical outcomes and complications between 23-gauge and 20-gauge transconjunctival sutureless vitrectomy for patients with proliferative diabetic retinopathy.Methods 64 eyes of 52 consecutive patients who underwent diabetic vitrectomy were enrolled in this retrospectively comparative study.40 eyes of 32 patients underwent 23G microincision vitrectomy(23G group).24 eyes of 20 patients underwent 20G vitrectomy(20G group).The follow-up time was 6 months.The best corrected visual acuity (BCVA),intraocular pressure (IOP),and incidence of intraoperative and postoperative complications were compared.Results BCVA of both groups at postoperative 1,3 and 6 months improved significantly compared with the preoperative BCVA (x2 =20.32,22.56,18.23,P ＜ 0.01).The I OP of the 23-gauge group at postoperative day 1 was lower than the preoperative IOP (t =2.75,P ＜ 0.01).The Operating time of 23-gauge group was shorter than the 20-gauge group (t =2.71,P ＜ 0.01).There was no significant difference in the incidence of intraoperative and postoperative complications except transient postoperative hypotony,which occurred in 9 eyes(22.5％) of the 23-gauge group (x2 =4.56,P =0.03).Conclusion 23-gauge transconjunctival sutureless vitrectomy appears to be as effective as 20-gauge vitrectomy for proliferative diabetic retinopathy.There is no significant difference between two methods in intraoperative and postoperative complications. Key words: Retinopathy, diabetic, proliferative; Vitrectomy, 23-gauge,20-gauge; Research,comparative