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要約 目的:強度近視眼に生じる単純型黄斑部出血の光干渉断層計(OCT)所見の報告。対象と方法:8例8眼を対象とした。男性5例,女性3例で,年齢は31~64歳(平均44歳)である。全例に-8D以上の近視または26.5mm以上の眼軸長があり,脈絡膜新生血管がない単純型黄斑出血があった。視力はlogMARとして評価した。結果:6か月間の経過観察で,平均視力は0.18から-0.02に有意に改善した(p<0.01)。平均中心網膜厚は当初243μm,6か月後220μmで,有意差がなかった。最終的に全例で出血が消失した。眼底のlacquer crack lesionの形成または伸展が5例にあった。中心窩での視細胞内節外節接合線は7眼で検出され,これらの小数矯正視力はすべて0.9以上であった。結論:強度近視眼に生じた単純型黄斑部出血での視力予後の判定には,光干渉断層計による中心窩での視細胞内節外節接合線の評価が有用である。
Abstract. Purpose:To report optical coherence tomography(OCT)findings of submacular hemorrhage in pathological myopia. Cases and Method:This retrospective study was made on 8 eyes of 8 patients. The series comprised 5 males and 3 females. The age ranged from 31 to 64 years,average 44 years. All the eyes had either myopia greater than -8 diopters or axial length greater than 26.5 mm. All the eyes had submacular hemorrhage without choroidal neovascularization. Visual acuity was evaluated in terms of logMAR. Results:After 6 months,averaged visual acuity improved significantly from 0.18 to -0.02(p<0.01). Averaged foveal thickness changed from 243μm to 220μm 6 months later. The difference was not significant. Submacular hemorrhage disappeared in all the eyes. Five eyes showed formation or progression of lacquer crack lesion. Junction line of inner and outer photoreceptor segments was detected in 7 eyes by OCT. These 7 eyes had final decimal visual acuity of 0.9 or over. Conclusion:Junction line of inner and outer segments may serve as an indicator for visual prognosis in submacular hemorrhage in pathological myopia.
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