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Comparison of objective accommodation in phakic and pseudophakic eyes between age groups

Authors
 Byunghoon Chung  ;  Seonghee Choi  ;  Yong Woo Ji  ;  Eung Kweon Kim  ;  Kyoung Yul Seo  ;  Tae-im Kim 
Citation
 GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY, Vol.257(3) : 575-582, 2019 
Journal Title
 GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY 
ISSN
 0721-832X 
Issue Date
2019
MeSH
Accommodation, Ocular/physiology* ; Age Factors ; Aged ; Aging/physiology* ; Female ; Humans ; Lenses, Intraocular* ; Male ; Middle Aged ; Phacoemulsification ; Presbyopia/physiopathology* ; Pseudophakia/physiopathology* ; Pupil/physiology* ; Refraction, Ocular/physiology*
Keywords
Accommodation ; Presbyopia ; Pseudoaccommodation ; Pseudophakia
Abstract
PURPOSE: To compare objective accommodation of phakic and pseudophakic eyes between two different age groups. METHODS: Eighty-three eyes (83 participants aged ≥ 40 years) with a visual acuity of 20/25 or better, and refractive error < spherical - 1.0 diopters (D) and cylindrical 1.0 D, were included. Forty-four patients had undergone phacoemulsification and monofocal intraocular lens implantation and were examined 6 months post-surgery. Participants were divided into groups 1 (pseudophakic, age < 60 years), 2 (pseudophakic, ≥ 60 years), 3 (phakic, < 60 years), and 4 (phakic, ≥ 60 years). Objective accommodation and pupil diameter to 2.0- and 3.0-D stimuli were measured with a binocular open-field autorefractor. RESULTS: The mean objective accommodation was 0.29 ± 0.47 D, 0.01 ± 0.21 D, 1.00 ± 0.88 D, and 0.01 ± 0.13 to a 2.0-D stimulus, and 0.26 ± 0.51 D, - 0.06 ± 0.21 D, 1.42 ± 1.21 D, and - 0.06 ± 0.21 to a 3.0-D stimulus in groups 1, 2, 3, and 4, respectively. For both stimuli, the values in group 1 exceeded those in groups 2 and 4, and were smaller than those in group 3, while the values in group 3 exceeded those in groups 2 and 4. The mean pupillary diameter was - 0.5 ± 0.8 mm, - 0.3 ± 0.8 mm, - 0.6 ± 0.5 mm, and - 0.6 ± 0.9 mm to a 2.0-D stimulus, and - 0.6 ± 0.8 mm, - 0.6 ± 0.8 mm, - 0.9 ± 0.5 mm, and - 1.0 ± 1.1 mm to a 3.0-D stimulus in groups 1, 2, 3, and 4, respectively. There was significant correlation between objective accommodation and changes of pupil size for both stimuli. CONCLUSION: Age seems to play a role in objective accommodation among relatively young pseudophakic patients.
Full Text
https://link.springer.com/article/10.1007%2Fs00417-019-04249-7
DOI
10.1007/s00417-019-04249-7
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Eung Kweon(김응권) ORCID logo https://orcid.org/0000-0002-1453-8042
Kim, Tae Im(김태임) ORCID logo https://orcid.org/0000-0001-6414-3842
Seo, Kyuong Yul(서경률) ORCID logo https://orcid.org/0000-0002-9855-1980
Chung, Byung Hoon(정병훈)
Ji, Yong Woo(지용우)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/169849
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