角膜中央厚度与高眼压症  

Central corneal thickness and ocular hypertension

作　　者：洪敏 陈晓明[1] 宋广瑶[1] 

机构地区：[1]华西医科大学附属第一医院眼科,四川成都610041

出　　处：《眼科》2000年第2期96-99,共4页Ophthalmology in China

摘　　要：目的：探讨部分高眼压症患者所表现出的非病理性高眼压（ＯＨＴ）是否为角膜中央厚度（ＣＣＴ）增加所导致的测量误差。方法：共收集了１１名ＯＨＴ患者（２１只眼）及１１名正常对照。用超声角膜测厚仪测量中央角膜厚度，用角膜曲率测量仪测角膜曲率。结果：ＯＨＴ患者ＣＣＴ为５９４．８±１７．５μｍ，明显高于正常对照（５２９．１±２７．３μｍ），两组角膜曲率差异无显著性。结论：至少一部分ＯＨＴ患者所表现出的非病理性高眼压来源于增厚的角膜中央厚度造成的测量误差。测量ＣＣＴ对于正确评估压平眼压，判断患者是否存在视野损害的危险及确定治疗与否的临界眼压具有重要临床意义。Objective: To determine whether ocular hypertension(OHT) is over diagnosed in patients with increased central corneal thicknes(CCT). Methods: 11 patients with OHT were compared with 11 control subjects. Central corneal thickness was determined with ultralsonic pachymetry. pachymetry. Corneal curvature was mea sured with keratometer. Results: The CCT in OHT patients was 594.8±17.5μm. This is significantly greater than in control subjects (529.1±27.3μm). There was no significant difference between corneal curvature for OHT patients compared with control subjects. Conclusions: Increase corneal thickness led to artificially high estimation of IOP in OHt patients clinically. Corneal pachymetry is helpful in evaluating IOP measured by applanation, determining the risk of visual loss and establishing a taget pressure.

关 键 词：角膜中央厚度 眼高压症 病因学 

分 类 号：R770.4[医药卫生—眼科]