Repeatability of Measuring Corneal Subbasal Nerve Fiber Length in Individuals With Type 2 Diabetes

被引：73

作者：

Efron, Nathan ^{[1
,2
]}

Edwards, Katie ^{[1
,2
]}

Roper, Nicola ^{[3
]}

Pritchard, Nicola ^{[1
,2
]}

Sampson, Geoff P. ^{[1
,2
]}

Shahidi, Ayda M. ^{[1
,2
]}

Vagenas, Dimitrios ^{[1
,2
]}

Russell, Anthony ^{[4
]}

Graham, Jim ^{[5
]}

Dabbah, Mohammad A. ^{[5
]}

Malik, Rayaz A. ^{[6
]}

机构：

[1] Queensland Univ Technol, Inst Hlth & Biomed Innovat, Kelvin Grove, Qld 4059, Australia

[2] Queensland Univ Technol, Sch Optometry, Kelvin Grove, Qld 4059, Australia

[3] Univ Manchester, Fac Life Sci, Manchester, Lancs, England

[4] Princess Alexandra Hosp, Brisbane, Qld 4102, Australia

[5] Univ Manchester, Sch Canc & Enabling Sci, Manchester, Lancs, England

[6] Univ Manchester, Div Cardiovasc Med, Core Technol Facil, Manchester, Lancs, England

来源：

EYE & CONTACT LENS-SCIENCE AND CLINICAL PRACTICE | 2010年 / 36卷 / 05期

基金：

英国医学研究理事会;

关键词：

Repeatability; Corneal nerves; Diabetes; Neuropathy; VIVO CONFOCAL MICROSCOPY; IN-VIVO; REGENERATION; NEUROPATHY; IMAGES; DAMAGE;

D O I：

10.1097/ICL.0b013e3181eea915

中图分类号：

R77 [眼科学];

学科分类号：

100212 ;

摘要：

Purpose: To analyze the repeatability of measuring nerve fiber length (NFL) from images of the human corneal subbasal nerve plexus using semiautomated software. Methods: Images were captured from the corneas of 50 subjects with type 2 diabetes mellitus who showed varying severity of neuropathy, using the Heidelberg Retina Tomograph 3 with Rostock Corneal Module. Semiautomated nerve analysis software was independently used by two observers to determine NFL from images of the subbasal nerve plexus. This procedure was undertaken on two occasions, 3 days apart. Results: The intraclass correlation coefficient values were 0.95 (95% confidence intervals: 0.92-0.97) for individual subjects and 0.95 (95% confidence intervals: 0.74-1.00) for observer. Bland-Altman plots of the NFL values indicated a reduced spread of data with lower NFL values. The overall spread of data was less for (a) the observer who was more experienced at analyzing nerve fiber images and (b) the second measurement occasion. Conclusions: Semiautomated measurement of NFL in the subbasal nerve fiber layer is highly repeatable. Repeatability can be enhanced by using more experienced observers. It may be possible to markedly improve repeatability when measuring this anatomic structure using fully automated image analysis software.

引用

页码：245 / 248

页数：4

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