Allen_2018_4.pdf (1.41 MB)
A review of depth of focus in measurement of the amplitude of accommodation
journal contribution
posted on 2023-07-26, 14:26 authored by David Burns, Peter M. Allen, David Edgar, Bruce J. W. EvansThe aim of this review is to investigate the role of depth of focus (DoF) as a potential confounding variable in the measurement of the amplitude of accommodation (AoA). The role of DoF in human vision is briefly summarised, and it is noted that the prevalent method of measuring AoA is the push-up method. Factors influencing the effect of DoF on the push-up and other methods of measuring AoA are reviewed in detail. DoF is shown to add substantial measurement error in the routine assessment of accommodation when the AoA is measured by methods involving subjective judgement of an object’s clarity. Reliable compensation for this source of error is not realistically possible because of the complexity of the aetiology of DoF, and its inter-individual and intra-individual variation. The method of measurement also influences the extent of the error. It is concluded that methods of measurement of AoA that exclude DoF should be preferred.
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Refereed
- Yes
Volume
2Issue number
3Page range
37Publication title
VisionISSN
2411-5150External DOI
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MDPIFile version
- Published version
Language
- eng
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Legacy posted date
2018-09-17Legacy creation date
2018-09-14Legacy Faculty/School/Department
Faculty of Science & EngineeringUsage metrics
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