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Post-Cycloplegia Myopic Shift in an Older Population


Toh, TY and Kearns, LS and Scotter, LW and Mackey, DA, Post-Cycloplegia Myopic Shift in an Older Population, Ophthalmic Epidemiology, 12, (3) pp. 215-219. ISSN 0928-6586 (2005) [Refereed Article]

DOI: doi:10.1080/09286580590964784


Purpose: To demonstrate that use of a mydriatic agent remains a significant confounder in autorefraction of the presbyopic population. Methods: The pre- and post-cycloplegic autorefraction results of 37 subjects over 50 years of age were measured using a Humphrey-598 autorefractor. The results of both eyes were included in a multivariate regression analysis. Results: The average age of the patient sample was 63.4 years. The mean spherical equivalent (SEQ) shifts for the hyperopic, myopic, pseudophakic, and emmetropic eyes were -0.53 D (95% CI -0.77 D to -0.39 D; p < 0.001), -0.38 D (95% CI -0.81 D to +0.04 D; p = 0.077), -0.49 D (95% CI -0.78 D to -0.20 D; p = 0.001), and -0.35 D (95% CI -0.59 D to -0.11 D; p = 0.004), respectively. Conclusion: Cyclopleged autorefraction in the presbyopic population is associated with a myopic shift that can potentially lead to overestimation of myopic prevalence. This is an important factor in comparing population studies where cyclogleged autorefraction is used in contrast to non-cyclopleged autorefraction and subjective refraction. Copyright © Taylor & Francis Inc.

Item Details

Item Type:Refereed Article
Research Division:Biomedical and Clinical Sciences
Research Group:Ophthalmology and optometry
Research Field:Ophthalmology
Objective Division:Health
Objective Group:Clinical health
Objective Field:Clinical health not elsewhere classified
UTAS Author:Mackey, DA (Professor David Mackey)
ID Code:37146
Year Published:2005
Web of Science® Times Cited:11
Deposited By:Medicine
Deposited On:2005-08-01
Last Modified:2006-06-21

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