THE EFFECT OF SMOKING ON PUPIL SIZE AND PHOTOSTRESS RECOVERY

This study published in Ophthalmic Research aimed to determine the effect of chronic smoking on the pupil and photostress recovery time. 

40 heavy smokers and 40 age- and sex-matched nonsmokers had full vision and no ocular problems. Photostress recovery times were similar in smokers and nonsmokers. Scotopic pupil sizes in smokers were similar; however, photopic pupil size in smokers was different from nonsmokers. 

Conclusions: Chronic smoking may dilate the pupil, and increases macular foveal threshold value immediately after photostress.