协和医学杂志

2013, v.4(04) 429-432

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A超角膜测厚仪和Pentacam系统测量散瞳前后角膜中央厚度的比较
Comparison of Central Corneal Thickness Before and After Mydriasis Measured with A-ultrasound Pachymetry and Pentacam Scheimpflug System

金玉梅;艾凤荣;罗岩;李莹;
JIN Yu-mei;AI Feng-rong;LUO Yan;LI Ying;Department of Ophthalmology,Peking Union Medical College Hospital,Chinese Academy of Medical Sciences &Peking Union Medical College;

摘要(Abstract):

目的比较应用A超角膜测厚仪和Pentacam三维眼前节分析系统测量的散瞳前后角膜中央厚度的差异。方法2011年8月至11月北京协和医院成人屈光不正患者65例(130眼),均先后应用Pentacam三维眼前节分析系统和A超角膜测厚仪进行散瞳前后角膜中央厚度的测量,散瞳剂采用复方托吡卡胺滴眼液。结果 A超角膜测厚仪测量的散瞳前后角膜中央厚度值分别为(536.70±39.60)和(548.31±39.22)μm,散瞳后的测量值明显高于散瞳前(P=0.000);Pentacam三维眼前节分析系统测量的散瞳前后角膜中央厚度值分别为(539.57±39.73)和(545.99±39.47)μm,散瞳后的测量值亦明显高于散瞳前(P=0.000)。两种方法散瞳前角膜中央厚度的测量值比较,Pentacam三维眼前节分析系统测量值明显高于A超角膜测厚仪(P=0.000);而两种方法散瞳后的测量值比较,差异无统计学意义(P=0.081)。结论散瞳后角膜中央厚度测量值较散瞳前略有增加,故散瞳前测量值更能准确、真实地反映角膜中央厚度,有助于为角膜屈光手术方式的选择和手术安全性评价提供参考。
Objective To compare the difference of central corneal thickness(CCT) before and after mydriasis measured with A-ultrasound pachymetry and Pentacam three-dimensional anterior segment analysis system.Methods From August 2011 to November 2011,the CCT of 130 eyes from 65 adult patients with myopia in Peking Union Medical College Hospital were measured with A-ultrasound pachymetry and Pentacam Scheimpflug system before and after mydriasis using compound tropicamide eye drops. Results The CCT values obtained with A-ultrasound pachymetry before and after mydriasis were(536. 70±39. 60) μm and(548. 31±39. 22) μm,respectively. The value after mydriasis was significantly higher than that before mydriasis(P=0. 000). The CCT values obtained with Pentacam three-dimensional anterior segment analysis system before and after mydriasis were(539. 57±39. 73) μm and(545. 99±39. 47) μm,respectively. The value after mydriasis was also significantly higher than that before mydriasis(P=0. 000). CCT value obtained with Pentacam three-dimensional anterior segment analysis system was significantly higher than A-ultrasound pachymetry before mydriasis(P=0. 000);however,there was no significant difference in CCT between the two methods after mydriasis(P=0. 081). Conclusions Values of CCT measured after mydriasis are higher than before mydriasis. Therefore,the values of CCT measured before mydriasis may be more accurate,which can help to provide a better option for choosing operative methods and evaluating the safety of refractive surgery.

关键词(KeyWords): 角膜中央厚度;Pentacam三维眼前节分析系统;A超角膜测厚仪;散瞳
central corneal thickness;Pentacam three-dimensional anterior segment analysis system;A-ultrasound pachymetry;mydrasis

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作者(Author): 金玉梅;艾凤荣;罗岩;李莹;
JIN Yu-mei;AI Feng-rong;LUO Yan;LI Ying;Department of Ophthalmology,Peking Union Medical College Hospital,Chinese Academy of Medical Sciences &Peking Union Medical College;

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