網膜硝子体癒着が原因と考えられた若年性硝子体出血の1例

A case of juvenile vitreous hemorrhage presumably due to vitreoretinal adhesion

　27歳女性が右眼の視力低下で受診した。既往として，8年前に左眼の視神経乳頭炎，4年前に左眼の硝子体出血があった。矯正視力は，右1.2，左0.9であった。右眼には格別の異常がなく，左眼周辺部に硝子体混濁と視神経萎縮があった。その6日後に左眼視力障害が突発し，手動弁になった。濃い硝子体出血があった。硝子体出血はその後自然寛解し，2か月後に眼底が透見可能になった。上耳側網膜血管が赤道部で硝子体側に牽引されていた。硝子体手術を行い網膜血管の牽引を解除した。以後3年間の経過は良好で，再出血は起こっていない。視神経炎に続発した網膜血管炎が硝子体網膜癒着の原因であると推定した。

　A 27-year-old female presented with blurring of vision in her right eye. She had had optic neuritis in her left eye 8 years before and vitreous hemorrhage in the left eye 4 years before. Her corrected visual acuity was 1.2 right and 0.9 left. Her right eye was found to be normal. Her left eye showed optic atrophy and vitreous opacity in the periphery. Her left visual acuity was suddenly reduced to hand motion 6 days later due to massive vitreous hemorrhage. It recovered spontaneously 2months later. An avulsed vessel was present in the temporal superior periphery. She has been doing well after vitreoretinal adhesion was dissected by vitrectomy. It appeared that the vitreoretinal adhesion was due to retinal vasculitis secondary to optic neuritis.