Accommodation during Static Retinal Imaging with a Confocal Scanning Laser Ophthalmoscope

Accommodation dynamically changes during acquisition of retinal images with a cSLO. Concurrent scanning of a visible target did not improve stability of accommodation reliably. Potential factors affecting accommodation include depth of focus (DOF), use of monochromatic stimuli, and nearby cues. Using the model eye, the error induced by accommodation is about 491 μm/second, with a maximum of 813 μm/second. In terms of the time to acquire individual optical sections, these estimates are consistent with previous reports of increased variability of topographic measurements in nondilated eyes.