In:
PLOS ONE, Public Library of Science (PLoS), Vol. 17, No. 4 ( 2022-4-15), p. e0267149-
Abstract:
We investigated the effect of luminance on refraction and visual function under twilight conditions. Methods Twenty young adults (mean age 20.5 ± 0.5 years) without ocular diseases and 20 eyes were included in the study. Subjective and objective spherical equivalent power (SE), logMAR, pupil diameter, ocular aberration, and ocular axial length were evaluated. Measurements were conducted in a light room with high luminance (300 cd/m 2 ) targets (photopic), in a dark room with low luminance (10 cd/m 2 ) targets (twilight), and a dark room after 15 min of adaptation to low luminance (10 cd/m 2 ) targets (after adaptation: AA). Differences between the three conditions were analyzed using the Friedman test and Scheffe’s multiple comparisons. Results The results of logMAR were -0.20 ± 0.07, -0.08 ± 0.08, and -0.11 ± 0.08 in photopic, twilight, and AA, respectively, with significant differences between photopic and twilight (p 〈 0.001) and between photopic and AA (p 〈 0.001). Then subjective SE were -3.58 ± 2.04 D, -3.75 ± 2.08 D, and -3.74 ± 2.04 D in photopic, twilight, and AA, respectively, with significant differences between photopic and twilight (p = 0.007) and photopic and AA (p = 0.023). However, none of the other objective SEs produced a significant difference (p = 0.63). The pupil diameter and ocular aberration changed significantly in all conditions (p 〈 0.001). Conclusions Subjective myopic refraction increased and visual resolution decreased in younger subjects. However, this change in refraction is less than one level (±0.25 D) in clinical optometry, so fully corrected eyeglasses are important when assuming refraction in twilight, and there is no need for additional correction.
Type of Medium:
Online Resource
ISSN:
1932-6203
DOI:
10.1371/journal.pone.0267149
DOI:
10.1371/journal.pone.0267149.g001
DOI:
10.1371/journal.pone.0267149.g002
DOI:
10.1371/journal.pone.0267149.g003
DOI:
10.1371/journal.pone.0267149.g004
DOI:
10.1371/journal.pone.0267149.g005
DOI:
10.1371/journal.pone.0267149.g006
DOI:
10.1371/journal.pone.0267149.t001
DOI:
10.1371/journal.pone.0267149.s001
DOI:
10.1371/journal.pone.0267149.s002
DOI:
10.1371/journal.pone.0267149.s003
DOI:
10.1371/journal.pone.0267149.s004
DOI:
10.1371/journal.pone.0267149.s005
Language:
English
Publisher:
Public Library of Science (PLoS)
Publication Date:
2022
detail.hit.zdb_id:
2267670-3
Permalink