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増殖糖尿病網膜症(PDR)に対して硝子体手術のみを行った33例38眼と,硝子体手術と同時に水晶体摘出術を行った37例42眼に対して,術後虹彩および隅角の新生血管の発症を調べた。硝子体手術単独群では,術後虹彩隅角新生血管は4眼(10%)にみられ,20眼(53%)で視力の改善がみられた。同時手術群では,虹彩隅角新生血管は1眼(2%)にみられ,30眼(71%)で視力の改善がみられた。術後虹彩新生血管の発症率に関して,同時手術群と硝子体単独手術群の間に有意差はなかった。PDRに対する水晶体摘出・硝子体同時手術では,術後虹彩隅角新生血管の発症はむしろ少なく,安全で有用な術式と考えられる。
We reviewed the incidence of iris or angle neovascularization following vitrectomy for proliferative diabetic retinopathy. A series of 38 eyes received vitrectomy alone and another series of 42 eyes received ad-ditional phacoemulsification. Visual acuity improved in 20 eyes (53%) in the former series and in 30 eyes (71%) in the latter. Postoperative iris or angle neovascularization developed in 4 eyes (10%) in the former and in 1 eye (2%) in the latter, with no statistical defference between the two groups. The findings show the safety and usefulness of simultaneous phacoemulsification and vitrectomy for proliferative diabetic in regard to postoperative iris or angle neovascularization.
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