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Sources of error in clinical measurement of the amplitude of accommodation
journal contribution
posted on 2023-09-01, 14:28 authored by David Burns, Peter M. Allen, David Edgar, Bruce J. W. EvansMeasurement of the amplitude of accommodation is established as a procedure in a routine optometric eye examination. However, clinical methods of measurement of this basic optical function have several sources of error. They are numerous and diverse, and include depth of focus, reaction time, instrument design, specification of the measurement end-point, specification of the reference point of measurement, measurement conditions, consideration of refractive error, and psychological factors. Several of these sources of inaccuracy are composed of multiple sub-sources, and many of the sub-sources influence the common methods of measurement of amplitude of accommodation. Consideration of these sources of measurement error casts doubt on the reliability of the results of measurement, on the validity of established normative values that have been produced using these methods, and on the value of reports of the results of surgery designed to restore accommodation. Clinicians can reduce the effects of some of the sources of error by modifying techniques of measurement with existing methods, but a new method may further improve accuracy.
History
Refereed
- Yes
Volume
13Issue number
1Page range
3-14Publication title
Journal of OptometryISSN
1989-1342External DOI
Publisher
ElsevierFile version
- Accepted version
Language
- eng
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Legacy posted date
2019-05-23Legacy creation date
2019-05-23Legacy Faculty/School/Department
Faculty of Science & EngineeringUsage metrics
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