Depth-of-focus: control system implications.
The depth-of-focus (DOF) plays a major role in accommodative control. It provides a neurological tolerance for retinal defocus and the perception of blur. Hence, the DOF has been an important component in bioengineering models of the accommodative system, but with its model-based control function limited to the fovea. However, new studies have demonstrated the influence of the near retinal periphery on the DOF: with increased target extent, the DOF increases. Thus, the blur control derived from the combined fovea and near retinal periphery should be incorporated into future models of accommodation.
Ciuffreda
Kenneth J
KJ
Vision Science, SUNY State College of Optometry, 33rd West 42nd Street, New York, NY 10036, USA. kciuffreda@sunyopt.edu
Wang
Bin
B
Vasudevan
Balamurali
B
D000065:Accommodation, Ocular / Q000502:physiology*; D001698:Biomedical Engineering; D005584:Fovea Centralis / Q000502:physiology; D006801:Humans; D008954:Models, Biological; D012160:Retina / Q000502:physiology