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

Byunghoon Chung, Seonghee Choi, Yong Woo Ji, Eung Kweon Kim, Kyoung Yul Seo, Tae im Kim

Research output: Contribution to journalArticle

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.

Original languageEnglish
Pages (from-to)575-582
Number of pages8
JournalGraefe's Archive for Clinical and Experimental Ophthalmology
Volume257
Issue number3
DOIs
Publication statusPublished - 2019 Mar 4

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Pupil
Age Groups
Intraocular Lens Implantation
Phacoemulsification
Refractive Errors
Visual Acuity

All Science Journal Classification (ASJC) codes

  • Ophthalmology
  • Sensory Systems
  • Cellular and Molecular Neuroscience

Cite this

@article{e7d26945fd134254b58311332f56d599,
title = "Comparison of objective accommodation in phakic and pseudophakic eyes between age groups",
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.",
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Comparison of objective accommodation in phakic and pseudophakic eyes between age groups. / Chung, Byunghoon; Choi, Seonghee; Ji, Yong Woo; Kim, Eung Kweon; Seo, Kyoung Yul; Kim, Tae im.

In: Graefe's Archive for Clinical and Experimental Ophthalmology, Vol. 257, No. 3, 04.03.2019, p. 575-582.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Comparison of objective accommodation in phakic and pseudophakic eyes between age groups

AU - Chung, Byunghoon

AU - Choi, Seonghee

AU - Ji, Yong Woo

AU - Kim, Eung Kweon

AU - Seo, Kyoung Yul

AU - Kim, Tae im

PY - 2019/3/4

Y1 - 2019/3/4

N2 - 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.

AB - 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.

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