A non-invasive instrument for clinical assessment of the pre-corneal tear film stability
作者:
MengherLakhbir S.,
BronAnthony J.,
TongeStephen R.,
GilbertDavid J.,
期刊:
Current Eye Research
(Taylor Available online 1985)
卷期:
Volume 4,
issue 1
页码: 1-7
ISSN:0271-3683
年代: 1985
DOI:10.3109/02713688508999960
出版商: Taylor&Francis
关键词: BUT Break-up time;NIBUT Non-invasive break-up time;Obs Observations;P.C.T.F. Pre-corneal tear film;R.E. Right eye;L.E. Left eye;sec seconds;S.E.M. Standard error of the mean
数据来源: Taylor
摘要:
A simple, non-invasive technique has been developed for assessment of the stability of the pre-corneal tear film. Changes are observed in the reflection of a grid pattern from the tear film surface. Breaks in the tear film appear as random discontinuities in the grid image. Using this non-invasive technique the stability of the pre-corneal tear film was assessed in nine normal subjects and twelve established dry-eye patients. The non-invasive tear film break-up time (NIBUT) of the dry-eye patients was on average only 25% to 32% of normal values. The non-invasive technique provides an alternative approach to diagnosing non-wetting disorders as well as a means of evaluating the efficacy of artifical tear solutions.
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