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硝子体手術に伴ってシリコーンオイル注入を受けた58眼の視機能を検索した。原疾患は,糖尿病網膜症22眼,増殖性硝子体網膜症22眼,加齢黄斑変性症7眼,その他であった。34眼でシリコーンオイルが抜去され,24眼では非抜去のままであった。抜去群の視力は非抜去群よりも有意によかった(p<0.5)。視力と抜去時期の間に有意差はなかった。糖尿病網膜症と増殖性硝子体網膜症では抜去群と非抜去群の間に視力の差はなかった。抜去群では,抜去後の眼圧が抜去前よりも有意に下降した(p<0.05)。非抜去群では,手術前後に眼圧の有意差はなかった。合併症と視機能維持の面から,シリコーンオイルはできるだけ抜去すべきであると結論される。
We reviewed the visual function in 58 eyes following vitrectomy and silicone oil implantation. The seriescomprised diabetic retinopathy 22 eyes, proliferative vitreoretinopathy (PVR) 22 eyes, age-related macular degeneration7 eyes and others. Silicone oil was later removed in 34 eyes (removed group) and not in 24 eyes (retained group). Thefinal visual acuity was significantly better in the removed group than in the retained group (p<0.05). Visual acuity in the removed group was not related with the interval between implantation and removal. In diabetic retinopathy and proliferative vitreoretinopathy, there was no difference in final visual acuity between the removed and retained group. The intraocular pressure (IOP) significantly decreased after removal of silicone oil (p<0.05). There was no difference in IOP before andafter vitrectomy in the retained group. Whenever feasible, we advocate eventual removal of silicone oil in order to avoid complications and to maintain visual functions.
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