A Review of Depth of Focus in Measurement of the Amplitude of Accommodation.
A Review of Depth of Focus in Measurement of the Amplitude of Accommodation.
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DOI：
10.3390/vision2030037
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发表时间：
2018-09-06
期刊：
影响因子：
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通讯作者：
Evans, Bruce J W
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文献类型：
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作者：
Burns, David H;Allen, Peter M;Evans, Bruce J W
本综述的目的是探讨焦深(DoF)作为潜在的混杂变量在调节幅度(AOA)测量中的作用。简要总结了DOF在人类视觉中的作用，并指出目前流行的测量AOA的方法是俯卧法。详细介绍了DOF对俯卧撑影响的因素以及其他测量AOA的方法。当通过主观判断对象的清晰度的方法测量AOA时，DOF被证明在常规调节评估中增加了相当大的测量误差。由于DOF病因的复杂性及其个体间和个体内的差异，对这种误差源的可靠补偿在现实中是不可能的。测量方法也会影响误差的程度。结论：应首选不包括DOF的AOA测量方法。
The 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.