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Takushi Kawamorita, Hiroshi Uozato; Changes of natural pupil size and ocular wavefront aberrations under the binocular and the monocular conditions. Journal of Vision 2006;6(13):54. doi: https://doi.org/10.1167/6.13.54.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: To investigate how the activity of the natural pupils under the binocular and monocular conditions affects the wavefront aberrations.
Methods: Twelve eyes from 12 subjects (aged 21–24 years; mean 22.2±0.9 years) were included in the study. The undilated pupil diameters under photopic condition (520lx) were measured with an infrared electronic pupillometer FP-10000 (TMI, Japan). Continuous recording of pupil diameters under the binocular and the monocular conditions was performed. Aberrometry measurements were performed with the Hartmann-Shack-based wavefront sensor KR-9000PW (Topcon, Japan). Zernike coefficients were recalculated for the diameters of each pupil under the binocular and monocular conditions with Schwiegerling's algorithm of recalculating the expansion coefficient. Multiple regression analysis was performed to analyze independent predictors of the change of higher order aberration for 6.0mm from the binocular to the monocular condition.
Results: The change of the pupil diameter and the total higher-order aberrations from the binocular condition to the monocular condition were 1.23±0.45 mm and 0.21±0.14 µm respectively (P<.0001). The multiple regression of analysis of variables showed that the change of the total higher order aberration from the binocular to the monocular condition was related to the size of the binocular pupil diameter and the amount of higher order aberrations for 6.0mm (P<.05).
Conclusions: These results suggest that increased pupil diameter in the monocular condition produces higher wavefront aberrations than that in the binocular condition, resulting in worse retinal image quality, and in eyes with larger higher order aberration and pupil diameter the effect would be enhanced.
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