水晶体欠損症に対し水晶体再建術を行った1例

Lens reconstruction in a case of lens coloboma

要約　目的：両眼の白内障と水晶体欠損症に対し，通常の方法による水晶体再建術を行った症例の報告。

症例：55歳の男性が，数年前からの視力障害を自覚して紹介受診した。

所見と経過：初診時の裸眼視力は，右0.04，左0.1で，矯正視力は右0.7，左1.2であった。両眼に核白内障と，水晶体の下方に水晶体欠損とチン小帯欠損があった。両眼に水晶体乳化吸引術と眼内レンズ挿入を行い，1.2の矯正視力を得た。術中に水晶体囊拡張リングは用いなかった。術後6か月の現在まで，経過に問題はない。

結論：水晶体欠損がある部位以外にはチン小帯の脆弱がなく，欠損の範囲が軽度な症例に対する白内障手術として，通常の水晶体再建術が安全で有効であった。

Abstract　Purpose：To report a case who received conventional reconstruction surgery for bilateral cataract and lens coloboma.

Case：A 55-year-old male presented with impaired visual acuity since a few years before.

Findings and Clinical Course：Visual acuity was 0.04 right and 0.1 left without correction. Both eyes showed marked horizontal astigmatism. Corrected visual acuity was 0.7 right and 1.2 left. Both eyes showed nuclear cataract and notch-like lens coloboma at 4 to 6 o'clock position. Lens zonules were absent in the area of lens coloboma. Both eyes received phacoemulsisfication and aspiration, and intraocular lens insertion. Visual acuity was 1.2 in either eye after surgery. There has been no problem for 6 months until present.

Conclusion：This case illustrates that conventional lens reconstruction surgery may be safe and effective for mild lens coloboma with no fragile lens zonule.