扫描激光旋光分析增强模块改进可变角膜代偿时的非典型双折射图像
An enhancement module to improve the atypical birefringence pattern using scanning laser polarimetry with variable corneal compensation作者机构：Bascom Palmer Eye Institute 7108 Fairway Drive Palm Beach Gardens FL 33418 United StatesDr.
出 版 物：《世界核心医学期刊文摘(眼科学分册)》 (Digest of the World Core Medical Journals)
年 卷 期：2006年第12期
页 面：24-25页
学科分类：1002[医学-临床医学] 100212[医学-眼科学] 10[医学]
主 题：角膜 非典型 双折射 旋光分析 图像 激光 模块 模件
摘 要：Aim: To examine the repeatability and effect of an enhancement module on the severity of atypical birefringence patterns (ABP) using scanning laser polarimetery (SLP) with variable corneal compensation (VCC). Methods: 16 patients with perimetric glaucoma (PG), 24 glaucoma suspect and pre-perimetric glaucoma (GSPPG), and 12 normal volunteers (N) were included. One randomly selected eye of each volunteer was scanned three times using VCC and enhanced corneal compensation (ECC) at the same session by the same examiner. Typical scan scores (TSS) were calculated to evaluate the ABP. Coefficients of variability (CoV), coefficients of repeatability (CoR), and intraclass correlation coefficients (ICC) were calculated. Results: The mean TSS using ECC (n=97.3 (5.5), GSPPG=98.3 (3.5), PG =99.2 (2.3))was significantly higher (p=0.02, 0.01, and 0.006, respectively) compared with VCC (80.5 (14.4), 88.2 (18.2), and 83.4 (2.2), respectively). VCC parameters had a CoR of 1.2-6.5, CoV of 1.9%-8.6%, and ICC of 0.8-0.9. ECC parameters had a CoR of 0.5-4.0, CoV of 0.3%-5.1%, and ICC of 0.2-0.9. TSNIT average was the overall best performing parameter with the highest repeatability and least variability using both techniques(CoR 2.1, CoV 2%). Conclusion: The enhancement module significantly reduced the severity of ABP and maintained a high level of repeatability of retardation measurements.
同方期刊数据库