Ahuja Markanday
Shri Baba Mast Nath Charitable Eye Hospital, Rohtak 124021.
J Indian Med Assoc. 2002 Nov;100(11):664-6.
Common types of contact lens are hard, rigid gas-permeable or soft lenses. Most lenses are worn on a daily basis. Cosmetic lenses are worn for non-medical indications. Microbial keratitis, a rare but most significant complication is discussed in this article. Pseudomonas aeruginosa and staphylococci are the most common organisms cause infective keratitis. Fungi and acanthamoeba are also responsible. The causes of increased susceptibility to infection are poor lens hygiene, adhesion of bacteria to lens surface and hypoxia. Preventing measures to be taken while wearing contact lens are discussed in a nutshell. Ocular pain, conjunctival infection, photophobia, epiphora and reduced vision are some of the symptoms of corneal infection. Diagnostic laboratory investigations are to be carried out immediately when a microbial corneal ulcer is suspected. Acanthamoeba can be cultured from corneal scrapes. Immunologically based fluorescein labelling techniques appear to be more sensitive than simple staining. The treatment consists of medical and surgical intervention. Corneal thinning, descemetocele formation and perforation are possible complications.
常见的隐形眼镜类型包括硬性、硬性透气性或软性镜片。大多数镜片是日常佩戴的。美容镜片用于非医疗用途。本文讨论了微生物性角膜炎，这是一种罕见但非常严重的并发症。铜绿假单胞菌和葡萄球菌是引起感染性角膜炎最常见的病原体。真菌和棘阿米巴也可致病。感染易感性增加的原因包括镜片卫生不良、细菌粘附于镜片表面和缺氧。简要讨论了佩戴隐形眼镜时应采取的预防措施。眼痛、结膜感染、畏光、流泪和视力下降是角膜感染的一些症状。当怀疑有微生物性角膜溃疡时，应立即进行诊断性实验室检查。棘阿米巴可从角膜刮片中培养出来。基于免疫的荧光标记技术似乎比简单染色更敏感。治疗包括药物和手术干预。角膜变薄、后弹力层膨出形成和穿孔是可能的并发症。
