眼内レンズ挿入眼の屈折値

State of refraction following intraocular lens implantation

（P−1-54）　矯正視力が1.0以上ある両眼眼内レンズ（IOL）挿入患者297例に対し，近見および遠見の視活動についてのアンケートと術後屈折度を調査し，IOL挿入眼の目標とすべき屈折値を検討した。正視群（等価球面度数±1.0D以内），近視群（＜−1.0D），遠視群（＞＋1.0D）がそれぞれ199例，86例，12例であった。正視群の近用眼鏡所有率は71.7％，遠用眼鏡所有率は24.9％であり，近視群はそれぞれ31.8％と62.8％であった。近用眼鏡なしでも正視群で約80％の患者が不自由を感じず，逆に近視群でも15％近くが不自由を感じており，術後目標屈折値を正視としても，読書など精密な近見作業以外は近用眼鏡を必要とせず，患者自身の満足が得られる可能性が高いと考えられた。

We reviewed 297 patients who underwent bilateral cataract surgery with intraocular lens (IOP) implantation and who had corrected visual acuity of 20/20. Patients were also asked to report about their near and far vision by question-naire . There were 199 patients who were emmetropic, or refractive error within ｱ 1.0 diopter (D) , 86 patients who had myopia greater than-1.0D, and 12 patients who had hyperopia greater than +1.0 D. Spectacles for near and distance were used by 71.7% and 24.9% of emmetropes respectively, and by 31.8% and 62.8% of myopes respectively. Subjectively, about 80% of emmetropes had no difficulty in near vision and, conversely, about 15% of myopes had difficulty. The findings show that IOP implantation can be designed to achieve postoperative emmetropia regarding the comfort of patients except in reading activities.