Abstract
To assess the incidence of iatrogenic peripheral retinal breaks in 23-gauge vitrectomy for macular diseases and to compare it with 20-gauge vitrectomy. Retrospective, comparative, interventional case series. We compared the incidence of iatrogenic peripheral retinal breaks in 176 eyes undergoing 23-gauge vitrectomy between January 2007 and November 2009 (23-gauge group) and 153 eyes undergoing 20-gauge vitrectomy between January 2004 and June 2006 (20-gauge group) for either idiopathic macular holes or idiopathic epiretinal membranes. All surgeries were performed by one surgeon at a single hospital. Main outcome measure was the incidence rate of iatrogenic peripheral retinal breaks discovered intraoperatively and postoperatively. Iatrogenic peripheral retinal breaks occurred in 1 eye in the 23-gauge group and in 11 eyes in the 20-gauge group during surgery. Additional iatrogenic retinal breaks were found in 1 eye in the 23-gauge group and in 2 eyes in the 20-gauge group within 1 month after surgery. The overall incidence of iatrogenic peripheral retinal breaks was 1.1% (2 of 176) in the 23-gauge group and 8.5% (13 of 153) in the 20-gauge group. The difference was statistically significant (P = 0.0023). The incidence of iatrogenic peripheral retinal breaks during vitrectomy for macular diseases is significantly lower in 23-gauge vitrectomy than in 20-gauge vitrectomy.
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