Fig. 1.

Experimental setup. Subjects were positioned in front of the OCT with their head in 0° and their fixation gaze shifted by about 40°. With their left eye, subjects fixated a target through a mirror which was attached to the head rest while their right eye’s ciliary muscle was imaged. For far vision, the near display was moved out of the subjects’ fixation line to allow unobstructed view of the far target. The order of target presentation was randomized. Simultaneous measurements of accommodative response were undertaken by eccentric infrared photorefraction.