Clinical Objective Dry Eye Tests in a Population of Tannery Workers in North India

Ophthalmic Epidemiology
Ratnesh RanjanRamesh Chandra Gupta

Abstract

To analyze the correlation between subjective symptoms and clinical signs of dry eye among tannery workers. In this cross-sectional study, three classic clinical tests, namely the fluorescein tear film break-up time (FTBUT) test, the fluorescein staining (FS) test, and the Schirmer test (ST), were performed to assess the clinical signs of dry eye disease in 246 tanners who were found symptomatic for dry eye in a prior ocular surface disease index survey. All workers were male with a mean age of 35 ± 9 years, and the mean duration of work at tanneries was 8 ± 5 years. Among 246 symptomatic subjects, the FTBUT test, the FS test and the ST were positive in 63.8%, 30.9% and 41.9% workers, respectively. Mean FTBUT and ST scores were 10.6 ± 4.2 seconds and 10.1 ± 7.7mm, respectively. Mean FTBUT for mild, moderate and severe symptom categories differed significantly. Mean ST scores for the mild symptom group were significantly higher than that of the moderate group (p < 0.0001). The FTBUT and ST score showed a strong negative correlation with severity of symptoms (p < 0.0001). A moderate positive correlation was observed between FS positivity and increasing symptom severity (p < 0.0001). The effect of age was insignificant for FTBUT (...Continue Reading

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