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5症例5眼で親水性アクリル眼内レンズが混濁し,摘出した。年齢は51~69歳(平均62.8歳)であり,摘出までの期間は12~25か月(平均18.4か月)であった。全症例に糖尿病網膜症があり,汎網膜光凝固が行われていた。2症例2眼には硝子体手術,4症例では透析が行われていた。摘出した眼内レンズには光学部表面のみに大小の顆粒状の結晶があり,カルシウムとリンが元素分析で証明された。糖尿病,硝子体手術,透析は親水性アクリル眼内レンズが混濁する危険因子である。
Hydrophilic acrylic intraocular lens(IOL)had to be removed and exchanged due to opacity in 5 eyes of 5 patients. Their ages ranged from 51 to 69 years,average 62.8 years. The interval between IOL insertion and removal ranged from 12 to 25months,average 18.4months. All the patients had received panreteinal photocoagulation for diabetic retinopathy. Vitreous surgery had been performed on 2 eyes. Four patients had been under hemodialysis. The removed IOLs had granular crystals of different sizes in the optic area. Spectroanalysis showed presence of calcium and phosphorus. The findings show diabetes mellitus,vitreous surgery and dialysis as major risk factos for opacity of hydrophilic acrylic IOL.
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