Correlation of myopia severity with visual performance
- PDF / 266,368 Bytes
- 11 Pages / 547.087 x 737.008 pts Page_size
- 10 Downloads / 194 Views
(0123456789().,-volV) ( 01234567 89().,-volV)
ORIGINAL PAPER
Correlation of myopia severity with visual performance Bryan Chin Hou Ang . Kai Xiong Cheong . Mellisa Mei Hui Tan . Edmund Wei Long Lim . Frederick Lian Kheng Tey . Colin Siang Hui Tan . Marcus Chiang Lee Tan
Received: 6 March 2020 / Accepted: 25 April 2020 Ó Springer Nature B.V. 2020
Abstract Purpose To describe visual performance in high myopia. Methods In this cross-sectional study, 148 emmetropes [spherical equivalent (SE) - 0.50 to ? 1.00 D] and 564 high myopes [SE B - 6.00 D] were categorised into three groups (Group 1: SE - 6.00 to [ - 8.00 D; Group 2: SE - 8.00 to [ - 10.00 D; and Group 3: SE B - 10.00 D). Multivariate regression analyses adjusting for age and ethnicity examined the relationship between corrected distance visual acuity (CDVA) [photopic, mesopic and super vision
B. C. H. Ang (&) C. S. H. Tan National Healthcare Group Eye Institute, Tan Tock Seng Hospital, Singapore, Singapore e-mail: [email protected] B. C. H. Ang K. X. Cheong M. M. H. Tan E. W. L. Lim M. C. L. Tan Vision Performance Centre, Military Medicine Institute, Singapore Armed Forces, Singapore, Singapore K. X. Cheong Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Singapore F. L. K. Tey DSO National Laboratories, Defence Medical and Environmental Research Institute, Singapore, Singapore
test-night vision goggles (SVT-NVG)] and contrast sensitivity (CS)] (mesopic and SVT-NVG) with SE and axial length (AL). Results Mean age of subjects was 21.07 ± 1.17 years, and majority were Chinese (91.9%). Mean SE was 0.10 ± 0.23 D (emmetropes) and - 8.76 ± 2.04 D (high myopes), p \ 0.001. Higher degrees of myopia were associated with reduced CDVA and CS, and increased AL (all p \ 0.001). Among high myopes, Group 1 had the highest proportion of subjects with good CDVA (photopic B 0.00 LogMAR, mesopic B 0.00 LogMAR and NVG B 0.10 LogMAR) and CS (mesopic C 0.75 LogCS and NVG C 0.35 LogCS) compared with Groups 2 and 3 (all p \ 0.001). Among high myopes with good VA (photopic B 0.00 LogMAR, mesopic B 0.00 LogMAR and NVG B 0.10 LogMAR), Group 1 also had the highest proportion of subjects who achieved mesopic C 0.75 LogCS and NVG C 0.35 LogCS (both p \ 0.001). Multivariate analyses demonstrated that reduced VA and CS were associated with decreased SE and increased AL (all p \ 0.001). Conclusions High myopia is associated with reduced VA and reduced CS. Keywords Myopia Asians Visual acuity Contrast sensitivity
C. S. H. Tan Fundus Image Reading Center, National Healthcare Group Eye Institute, Singapore, Singapore
123
Int Ophthalmol
Introduction
Methods
An understanding of visual performance in high myopia is important from numerous perspectives. Firstly, myopia is the most prevalent refractive error [1, 2], with a particularly high prevalence in Asian populations [3–5]. High myopia is defined as a spherical equivalent (SE) of more than - 6.00 dioptres (D) and has been found to have a prevalence of between 9 and 21% among Asian populat
Data Loading...
