The influence of brightness, age and refractive errors on pupil size

Year 2022, Volume: 16 Issue: 3, 146 - 151, 20.12.2022

Tolga Yılmaz Ferah Özçelik

Abstract

Objectives: In this study, we aimed to investigate the influence of age, gender and refractive status on pupil size under different illuminance conditions in presbyopic healthy people.
Methods: A total of 75 volunteers (49 females and 26 males) were included in the study. The medical records of each participant was reviewed. Patients were divided into three groups according to their age and refractive errors. Pupil responses were evaluated with the automated pupillometry function of the Sirius Topographer. Relationship between pupil size and age, sex, laterality, dominant eye, refrative errors were analyzed by statistical analyses.
Results: In the early aged presbyopia group of patients the mean value of the hyperopic group was higher than the other two groups in photopic measurements. In scotopic condition, the mean value of the myopic group was found to be higher than the emmetropic and hyperopic groups. No difference was observed in the comparison of mesopic measurements in all three groups. In the patients with established presbyopia, myopic pupil diameter was higher compared to emmetropic and hyperopic pupils in all illuminances. There was a difference only in the scotopic condition when comparing the emmetropic and hyperopic groups. Pupil size did not change with age in all three conditions in emmetropic eyes. Pupil diameter decreased in all three conditions with age in hyperopics. Photopic and mesopic pupil size increased with age in myopics.
Conclusion: The results of this study support that the effects of patient age and refractive status on pupil diameter are important in optimal lens design.

Keywords

hyperopics, myopics, presbyopics, pupil size, sirius cornea topography

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