The effect of smoking on the ocular surface and the precorneal tear film

Thomas, Jyothi and Jacob, George P and Abraham, Lekha and Noushad, Babu (2012) The effect of smoking on the ocular surface and the precorneal tear film. Australasian Medical Journal, 5 (4). pp. 221-226.

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Background:Smoking, both active and passive, creates a plethora of health‐related problems, which primarily affect the cardiovascular and respiratory systems. There is very little evidence on the effects of tobacco smoke on the eye, especially regarding anterior ocular surface related pathology. This study was undertaken to determine the effects of smoking on the ocular surface and the tear film in smokers. Methods:A total of 51 (102 eyes) smokers and 50 (100 eyes) age‐ andgender‐matched healthy non‐smokers were included in thisstudy. The ocular surface was evaluated by measuring tear film break‐up time, surface staining with fluorescein, and corneal and conjunctival sensitivities, and by completing the Schirmer’s II test. Data was analysed using Statistical Package for Social Sciences (SPSS) version 11.5. A p value less than 0.05 was considered statistically significant. Results: The smoker group had significantly lower tear film break‐up time, and corneal and conjunctival sensitivity than the nonsmoker group. Punctate staining was significantly higher in the smoker group than the non‐smoker group. There was no statistically significant difference in Schirmer’s II test results between the smoker and non‐smoker group. Conclusion: Smoking caused adverse effects on the precorneal tear film and there was strong association between smoking and tear film instability. Although a causative relationship could not be determined, there is a need for further longitudinal studies.

Item Type: Article
Uncontrolled Keywords: Smoking, ocular surface, dry eye, tear stability, corneal and conjunctival sensitivity
Subjects: Allied Health > MCOAHS Manipal > Optometry
Medicine > KMC Manipal > Community Medicine
Depositing User: KMC Manipal
Date Deposited: 22 Jun 2012 09:46
Last Modified: 22 Jun 2012 09:46

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