Difference in Pupillary Diameter as an Important Factor for Evaluating Amplitude of Accommodation: A Prospective Observational Study
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ID: 112525
2020
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Abstract
Presbyopia is increasing globally due to aging and the widespread use of visual display terminals. Presbyopia is a decrease in the eye’s amplitude of accommodation (AA) due to loss of crystalline lens elasticity. AA differs widely among individuals. We aimed to determine the factors that cause presbyopia, other than advanced age, for early medical intervention. We examined 95 eyes of 95 healthy volunteers (33 men, 62 women) aged 22–62 years (mean: 37.22 ± 9.77 years) with a corrected visual acuity of ≥1.0 and without other eye afflictions except ametropia. Subjective refraction, AA, maximum and minimum pupillary diameters during accommodation, axial length of the eye, and crystalline lens thickness were measured. AA was measured using an auto refractometer/keratometer/tonometer/pachymeter. The difference between maximum and minimum pupillary diameters was calculated. On multiple regression analysis, age and difference in pupillary diameter were both significantly and independently associated with AA in participants aged <44 years, but not in those aged ≥45 years. Our results suggest that the difference in pupillary diameter could be an important age-independent factor for evaluating AA in healthy individuals without cataract. Thus, improving the difference in pupillary diameter values could be an early treatment target for presbyopia.
| Reference Key |
kubota2020journaldifference
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| Authors | Miyuki Kubota;Shunsuke Kubota;Hidenaga Kobashi;Masahiko Ayaki;Kazuno Negishi;Kazuo Tsubota;Kubota, Miyuki;Kubota, Shunsuke;Kobashi, Hidenaga;Ayaki, Masahiko;Negishi, Kazuno;Tsubota, Kazuo; |
| Journal | journal of clinical medicine |
| Year | 2020 |
| DOI |
10.3390/jcm9082678
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| URL | |
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