Please use this identifier to cite or link to this item:
Title: Monochromatic aberrations of the human eye and myopia
Authors: Kwan, WCK
Yip, SP 
Yap, MKH 
Issue Date: 2009
Source: Clinical and experimental optometry, 2009, v. 92, no. 3, p. 304-312
Abstract: Background: The relationship between monochromatic aberrations of the human eye and myopia has been investigated extensively over the past decade or so but the results are inconclusive. Wide age range, narrow refractive error range and large individual variations are common confounding factors in previous studies. To address these shortcomings, we conducted a two-part study. The first part set out to determine whether the monochromatic aberrations in myopic eyes are different from those in the non-myopic eyes in adults. Subjects were drawn from a narrow age band to minimise the confounding effect of age. The second part of this study compared the monochromatic aberrations of the more myopic and less myopic eyes of anisometropes. Methods: Monochromatic aberrations were measured for 5 mm pupils using the Complete Ophthalmic Analysis System (COAS) Wavefront Analyzer in 116 subjects with refractive spherical equivalent between -10.38 D and +1.38 D and in 26 anisometropes. Measurements were done in a dark room with natural pupils. The refractive errors, corneal curvatures and axial lengths of the eyes were measured under natural accommodation. Results: Highly myopic eyes had significantly smaller root mean square (RMS) values of fourth order (p = 0.015) and spherical aberrations (p = 0.009) than non-myopic eyes. The correlation coefficient was 0.2354 (p = 0.011) between fourth-order aberrations and refractive spherical equivalents and 0.2817 (p = 0.002) between spherical aberration and refractive spherical equivalents. Less myopic eyes of the anisometropes showed significantly larger total higher-order, third-order and spherical aberrations than the more myopic eyes (p < 0.05, p < 0.05 and p < 0.01, respectively). Conclusions: Our study shows that spherical aberration is associated with refractive error. More myopic eyes tended to have smaller amounts of spherical aberration, however, the 'cause or effect' question remains. Longitudinal studies are needed to further investigate the relationship between monochromatic aberrations and refractive development.
Keywords: Anisometropia
Monochromatic aberrations
Spherical aberration
Publisher: Wiley-Blackwell
Journal: Clinical and experimental optometry 
ISSN: 0816-4622
EISSN: 1444-0938
DOI: 10.1111/j.1444-0938.2009.00378.x
Appears in Collections:Journal/Magazine Article

View full-text via PolyU eLinks SFX Query
Show full item record


Last Week
Last month
Citations as of Sep 2, 2020


Last Week
Last month
Citations as of Sep 17, 2020

Page view(s)

Last Week
Last month
Citations as of Sep 20, 2020

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.