Dynamic interactions between accommodation and convergence.
Frequency-domain equations were derived for the current dual-interaction model of accommodation and convergence control, and its adaptive behavior was related to the system's parameters. Contrary to predictions based on the steady-state performance of the model [18], dynamic analysis showed that the AC/A is sensitive to the method of measurement and a procedure is established for its reliable determination. Additionally, the results provided theoretical support for the empirical finding that low AC/A and CA/C ratios are associated with high accommodative and convergence adaptation, respectively [15]. The derived equations should help future studies relate the physiological behavior of accommodative and convergence to specific model parameters.
Polak
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College of Optometry, Ohio State University, Columbus 43210.
Jones
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D000065:Accommodation, Ocular / Q000502:physiology*; D003290:Convergence, Ocular / Q000502:physiology*; D008954:Models, Biological