Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/87758
Title: | The diversified defocus profile of the near-work environment and myopia development | Authors: | Choi, KY Mok, AYT Do, CW Lee, PH Chan, HHL |
Issue Date: | Jul-2020 | Source: | Ophthalmic and physiological optics, July 2020, v. 40, no. 4, p. 463-471 | Abstract: | Purpose: To quantify the defocus characteristics in the near-work environment at home and investigate the relationship with subsequent myopia progression. Methods: Fifty subjects (aged 7-12 years) were recruited and followed for 1 year. The home near-work environment (writing desk) was measured at a baseline home-visit using the Kinect-for-Windows to capture a 3-dimensional image. The depth values of the image were then converted into scene defocus with respect to the subject's viewpoint. The defocus characteristics were quantified as the dioptric volume (the total amount of net defocus, or DV) and standard deviation of the defocus values (SDD). Information on home size, time spent outdoors, and in front of a desk were also obtained. Univariate correlation, and multivariate regression were used to assess the association between myopia progression, defocus characteristics, and other co-variates. Results: The baseline spherical equivalent refraction (M) and refraction change over 1 year ( increment M) were - 1.51 +/- 2.02 D and - 0.56 +/- 0.45 D respectively. DV was not significantly correlated with increment M (Spearman's rho = -0.25, p = 0.08), while SDD was negatively correlated to increment M (Spearman's rho = -0.42, p = 0.003). Although SDD was not a significant predictor in multivariate analysis, the regional DV at 15 degrees-20 degrees eccentricity was significant (p = 0.001). Home size (F-2,F-50 = 7.01, p = 0.002) and time spent outdoors (Independent t = -2.13, p = 0.04) were also associated with increment M, but not time spent in front of desk (Independent t = 0.78, p = 0.44). Conclusion: The defocus profile in the home environment within the para-central field of view is associated with childhood refractive error development. |
Keywords: | Home size Living environment Myopia Near work |
Publisher: | Wiley-Blackwell | Journal: | Ophthalmic and physiological optics | ISSN: | 0275-5408 | EISSN: | 1475-1313 | DOI: | 10.1111/opo.12698 | Rights: | © 2020 The Authors. Ophthalmic and Physiological Optics published by John Wiley & Sons Ltd on behalf of College of Optometrists This is an open access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited. The following publication ChoiKY, Mok AY-T, Do C-W, Lee PH, & Chan HH-L. The diversified defocus profile of the near-work environment and myopia development. Ophthalmic Physiol Opt 2020 is available at https://dx.doi.org/10.1111/opo.12698 |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Choi_Diversified_Defocus_Myopia.pdf | 998.58 kB | Adobe PDF | View/Open |
Page views
91
Last Week
0
0
Last month
Citations as of Oct 13, 2024
Downloads
33
Citations as of Oct 13, 2024
SCOPUSTM
Citations
16
Citations as of Oct 17, 2024
WEB OF SCIENCETM
Citations
16
Citations as of Oct 17, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.