PURPOSE: The purpose of this study was to investigate the prevalence of lid wiper epitheliopathy (LWE) in patients diagnosed with dry eye disease (DED). METHODS: Patients were recruited for two groups. Inclusion criteria for the DED group (n = 50) was: a score greater than 10 with the Standard Patient Evaluation of Eye Dryness questionnaire, fluorescein break-up time 5 seconds or less, corneal and conjunctival staining with fluorescein, lissamine green Grade 1 or greater (scale 0-3), and Schirmer test with anesthesia 5 mm or less. For the asymptomatic group (n = 50), inclusion criteria were: no dry eye symptoms, fluorescein break-up time 10 seconds or greater, no corneal or conjunctival staining, and Schirmer test 10 mm or greater. Sequential instillations (n = 2, 5 minutes apart) of a mixture of 2% fluorescein and 1% lissamine green solution were used to stain the lid wipers of all patients. LWE was graded (scale 0-3) using the horizontal lid length and the average sagittal lid widths of the stained wiper. RESULTS: In symptomatic patients, 88% had LWE, of which 22% was Grade 1, 46% Grade 2, and 20% Grade 3. In asymptomatic patients, 16% had LWE, of which 14% was Grade 1, 2% was Grade 2, and 0% Grade 3. The difference in prevalence of lid wiper staining between groups was significant (P < 0.0001). CONCLUSIONS: The prevalence of LWE was six times greater for the DED group and the prevalence of LWE Grade 2 or greater was 16 times greater for the DED group than for the control group. These data further establish LWE as a diagnostic sign of dry eye disease.
PURPOSE: The purpose of this study was to investigate the prevalence of lid wiper epitheliopathy (LWE) in patients diagnosed with dry eye disease (DED). METHODS:Patients were recruited for two groups. Inclusion criteria for the DED group (n = 50) was: a score greater than 10 with the Standard Patient Evaluation of Eye Dryness questionnaire, fluorescein break-up time 5 seconds or less, corneal and conjunctival staining with fluorescein, lissamine green Grade 1 or greater (scale 0-3), and Schirmer test with anesthesia 5 mm or less. For the asymptomatic group (n = 50), inclusion criteria were: no dry eye symptoms, fluorescein break-up time 10 seconds or greater, no corneal or conjunctival staining, and Schirmer test 10 mm or greater. Sequential instillations (n = 2, 5 minutes apart) of a mixture of 2% fluorescein and 1% lissamine green solution were used to stain the lid wipers of all patients. LWE was graded (scale 0-3) using the horizontal lid length and the average sagittal lid widths of the stained wiper. RESULTS: In symptomatic patients, 88% had LWE, of which 22% was Grade 1, 46% Grade 2, and 20% Grade 3. In asymptomatic patients, 16% had LWE, of which 14% was Grade 1, 2% was Grade 2, and 0% Grade 3. The difference in prevalence of lid wiper staining between groups was significant (P < 0.0001). CONCLUSIONS: The prevalence of LWE was six times greater for the DED group and the prevalence of LWE Grade 2 or greater was 16 times greater for the DED group than for the control group. These data further establish LWE as a diagnostic sign of dry eye disease.
Authors: Erich Knop; Nadja Knop; Andrey Zhivov; Robert Kraak; Donald R Korb; Caroline Blackie; Jack V Greiner; Rudolf Guthoff Journal: J Anat Date: 2011-04 Impact factor: 2.610
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