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Comparison of One-year Outcomes between 23- and 20-gauge Vitrectomy for Preretinal Membrane

2009; Elsevier BV; Volume: 147; Issue: 4 Linguagem: Inglês

10.1016/j.ajo.2008.10.009

1879-1891

Taiichi Hikichi, Naomi Matsumoto, Hideo Ohtsuka, Makoto Higuchi, Takuro Matsushita, Hiroko Ariga, Shyoko Kosaka, Reiko Matsushita,

Glaucoma and retinal disorders

Purpose To compare the outcomes of transconjunctival sutureless 23-gauge vitrectomy and conventional 20-gauge vitrectomy 1 year after removal of preretinal membrane. Design Retrospective, consecutive, comparative case series. Methods One hundred consecutive eyes with a preretinal membrane underwent either 23- and 20-gauge vitrectomy. The rate of improvement of the logarithm minimum angle of resolution visual acuity (VA) was calculated by the formula: (various postoperative values − preoperative values) × 100/ (1 year postoperative values − preoperative values). Results No significant differences were found between the groups in the preoperative and postoperative VAs. The VA improvement was higher and the surgically induced corneal astigmatism was lower 1 week postoperatively in the 23-gauge group compared with the 20-gauge group (P = .006 and P = .001, respectively). The flare values in the anterior chamber measured by laser flare meter preoperatively and 1 week postoperatively did not differ between the groups. The surgical time was significantly (P = .023) shorter in the 23-gauge group than in the 20-gauge group. No apparent complications developed in either group. Conclusion Transconjunctival sutureless 23-gauge vitrectomy appears effective for preretinal membrane surgery with an acceptable safety profile. Transconjunctival sutureless 23-gauge vitrectomy may be a treatment option for preretinal membranes. To compare the outcomes of transconjunctival sutureless 23-gauge vitrectomy and conventional 20-gauge vitrectomy 1 year after removal of preretinal membrane. Retrospective, consecutive, comparative case series. One hundred consecutive eyes with a preretinal membrane underwent either 23- and 20-gauge vitrectomy. The rate of improvement of the logarithm minimum angle of resolution visual acuity (VA) was calculated by the formula: (various postoperative values − preoperative values) × 100/ (1 year postoperative values − preoperative values). No significant differences were found between the groups in the preoperative and postoperative VAs. The VA improvement was higher and the surgically induced corneal astigmatism was lower 1 week postoperatively in the 23-gauge group compared with the 20-gauge group (P = .006 and P = .001, respectively). The flare values in the anterior chamber measured by laser flare meter preoperatively and 1 week postoperatively did not differ between the groups. The surgical time was significantly (P = .023) shorter in the 23-gauge group than in the 20-gauge group. No apparent complications developed in either group. Transconjunctival sutureless 23-gauge vitrectomy appears effective for preretinal membrane surgery with an acceptable safety profile. Transconjunctival sutureless 23-gauge vitrectomy may be a treatment option for preretinal membranes.