Transient harmful effects of smoking on the eyes

 Results of examining the immediate or short-term effects of smoking on the eyes.


This study evaluated the tear film, pupil size, and eye adjustment ability within 5 minutes of smoking in 45 habitual smokers of cigarettes. For the analysis of the tear film, three measured values ​​of tear film destruction time, tear oil layer thickness, and tear meniscus height were used.

As a result, the tear layer destruction time was evaluated by all three evaluation methods, and the degree of decrease was statistically significant (P <0.001). A decrease in reservoir thickness was observed in the two evaluation methods used and was statistically significant (P <0.01). Significant reductions in pupil size (P <0.01) and accommodation (P <0.001) were observed after smoking cigarettes. Differences in tear meniscus height and depth of focus curve before and after smoking were not statistically significant (P> 0.05). These results indicate that smoking has an immediate adverse effect on tear film destruction time and accommodation of the eye, which is considered to be transient.

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