Wylegała Edward, Teper Slawomir, Nowińska Anna K, Milka Michal, Dobrowolski Dariusz
Department of Ophthalmology, District Railway Hospital, Silesian Medical University, Katowice, Poland.
J Cataract Refract Surg. 2009 Aug;35(8):1410-4. doi: 10.1016/j.jcrs.2009.03.034.
To compare anterior segment measurements and morphology of 2 optical coherence tomography (OCT) systems.
Department of Ophthalmology, District Railway Hospital, and the Nursing Department and Social Medical Issues, Health Care Division, Silesian Medical University, Katowice, Poland.
In normal eyes and in eyes with corneal and trabecular-iris angle disorders, the central corneal thickness (CCT), trabecular-iris angle, and angle-opening distance at the nasal and temporal angles were measured 3 times during 1 visit using the Visante time-domain OCT system and the RTVue-100 Fourier-domain corneal anterior module OCT system. Anterior segment morphology was assessed and compared.
Fifty-four eyes were evaluated. The mean values (+/-SD) by time-domain OCT and Fourier-domain OCT were, respectively, automatic CCT, 535 +/- 33.07 microm and 538 +/- 31.82 microm; manual CCT, 545 +/- 30.91 microm and 542 +/- 30.57 microm; nasal trabecular-iris angle, 34.7 +/- 9.5 degrees and 35.2 +/- 8.9 degrees; temporal trabecular-iris angle, 35.3 +/- 8.5 degrees and 35.5 +/- 9 degrees; nasal angle-opening distance, 435 +/- 95 microm and 444 +/- 98 microm; and temporal angle-opening distance, 443 +/- 103 microm and 452 +/- 99 microm. There was no significant difference between mean values, and they were highly correlated. On morphologic analysis, time-domain OCT had lower resolution; however, all anterior chamber structures were visible on 1 image. Fourier-domain OCT provided precise information about small areas of the anterior chamber.
Fourier-domain OCT provided accurate anterior eye segment measurements that agreed with those obtained with time-domain OCT.
比较两种光学相干断层扫描（OCT）系统眼前节测量结果及形态。
波兰卡托维兹西里西亚医科大学区铁路医院眼科、护理部及社会医学问题与医疗保健司。
在正常眼以及患有角膜和小梁 - 虹膜角疾病的眼中，使用Visante时域OCT系统和RTVue - 100傅里叶域角膜前节模块OCT系统在一次就诊期间对中央角膜厚度（CCT）、小梁 - 虹膜角以及鼻侧和颞侧角的房角开放距离进行3次测量。评估并比较眼前节形态。
共评估54只眼。时域OCT和傅里叶域OCT的平均值（±标准差）分别为：自动测量CCT，535±33.07微米和538±31.82微米；手动测量CCT，545±30.91微米和542±30.57微米；鼻侧小梁 - 虹膜角，34.7±9.5度和35.2±8.9度；颞侧小梁 - 虹膜角，35.3±8.5度和35.5±9度；鼻侧房角开放距离，435±95微米和444±98微米；颞侧房角开放距离，443±103微米和452±99微米。平均值之间无显著差异，且相关性很高。形态学分析显示，时域OCT分辨率较低；然而，所有前房结构在一张图像上均可看到。傅里叶域OCT提供了关于前房小区域的精确信息。
傅里叶域OCT提供的眼前节测量结果准确，与时域OCT获得的结果一致。
