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Proceedings Paper

Objective categorization of interferential tear film lipid layer pattern: validation of the technique
Author(s): C. García-Resúa; M. J. Giráldez; N. Barreira; M. G. Penedo; E. Yebra-Pimentel
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Paper Abstract

Purpose: The lipid layer of the tear film limits evaporation during the inter-blink interval and also affects tear stability. This study was designed to validate a new software application designed to characterize the tear film lipid layer through texture and colour pattern recognition. Methods: Using the Tearscope-plus (slit lamp magnification 200X), the lipid layer was examined in 105 healthy young adults and interference photographs acquired with a Topcon DV-3 digital camera. The photographs were classified by the new software and by 2 further observers (observer 1 and observer 2) with experience in examining the eye surface. Results: Strong correlation was detected between the categories determined by the new application, observer 1 and observer 2 (Cramer's V, from 0.81 to 0.87, p<0.001). Best agreement (96.2%) was noted between the new method and observers 1 and 2 for recognizing meshwork patterns, whereas observers 1 and 2 showed greatest correspondence when classifying colour fringe patterns. Conclusions: The new application can objectively categorize LLPs using the Tearscope-plus.

Paper Details

Date Published: 26 July 2011
PDF: 8 pages
Proc. SPIE 8001, International Conference on Applications of Optics and Photonics, 80010D (26 July 2011); doi: 10.1117/12.892068
Show Author Affiliations
C. García-Resúa, Univ. Santiago de Compostela (Spain)
M. J. Giráldez, Univ. Santiago de Compostela (Spain)
N. Barreira, Univ. A Coruña (Spain)
M. G. Penedo, Univ. A Coruña (Spain)
E. Yebra-Pimentel, Univ. de Santiago de Compostela (Spain)


Published in SPIE Proceedings Vol. 8001:
International Conference on Applications of Optics and Photonics
Manuel Filipe Costa, Editor(s)

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