霰粒腫によって自覚的視力障害が生じたLASIK既往眼の2例

Impairment of vision due to chalazion in two cases with history of LASIK

要約　目的：過去にLASIKを受けた2例に，霰粒腫による視力障害が生じた報告。症例：症例はそれぞれ42歳と55歳の女性で，どちらも右眼の霧視で受診した。両症例とも10年以上前にLASIKを両眼に受けた。所見：右眼の裸眼視力はそれぞれ1.2と0.9であった。1例には角膜皺襞，他の1例には−3Dの正乱視がそれぞれ右眼にあった。両症例とも右の上眼瞼に霰粒腫があった。経結膜的に霰粒腫を摘出した。1例では2週後，他の1例では1週後に自覚的な霧視は消失した。結論：両症例とも，霰粒腫が角膜皺襞と角膜乱視の原因であり，霧視になったと推定される。LASIKの既往がある眼では，霰粒腫により角膜形状に影響が生じやすいと考えられる。

Abstract.　Purpose：To report impairment of vision due to chalazion in two cases with past history of LASIK. Cases：Both were females aged 42 and 55 years respectively. They sought medical advice for blurring of vision in the right eye each. Both had received LASIK in both eyes more than 10 years before. Findings：Visual acuity in the affected eye was 1.2 and 0.9 without correction. One case showed corneal folds and the other case showed regular astigmatism by-3 diopters in the right eye. Both cases showed chalazion in the upper eyelid in the right eye. Excision of chalazion was followed by normalization of cornea after 2 weeks in one case and by decrease of astigmatism after one week in the other. Both reported disappearance of blurring. Conclusion：These cases illustrate that chalazion in the upper eyelid was the major cause of corneal folds and astigmatism, resulting in subjective blurring of vision. Eyes with past history of LASIK may be liable to corneal lesion in the presence of chalazion in the upper eyelid.