裂孔原性網膜剥離の病巣別分類

Classification of rhegmatogenous retinal detach-ment according to causative lesions

　裂孔原性網膜剥離を，裂孔を作る関連病巣別に分類することを試みた。過去10年間に治療された内眼手術既往歴のない自験例2,112眼を対象にした。裂孔を8つの関連病巣に分類し，その比率を調べた。各病巣の比率は，網膜格子状変性66.5％，黄斑円孔9.1％，顆粒状組織8.6％，硝子体基底部裂孔4.1％，限局性色素沈着4.1％，若年性鋸状縁断裂1.8％，網膜静脈分枝閉塞症1.7％，巨大裂孔1.6％であった。以上8つに該当しない裂孔をその他とし，これが2.6％あり，裂孔不明は2.7％であった。この分類法は，まだ問題点はあるが，今後病因の究明や治療法を確立する上で有用であると考える。

We tried to classify rhegmatogenous retinal detachment according to predisposing factors for retinal breaks. We based the present attempt on 2112 eyes of rhegmatogenous retinal detachment treated in our institution during 10 years through 1992. Excluded were eyes with history of intraocular surgery or inflammation. The causativelesions were classified into 8 categories: lattice degeneration 66.5%, macular hole 9.1%, granular tissue 8.6%, vitreous base lesion 4.1%, focal pig-ment 4.1%, young dialysis 1.8%, branch retinal vein occlusion 1.7% and giant tear 1.6%. There were 2.6% of eyes which failed to be classified in the above categories. No definite lesion could be identi-fied in 2.7%. The above classification is expected to be of value in studying the pathogenesis and to design therapeutic approach.