What are the two categories of limitations to day vision?

The two categories of limitations to day vision are physiological and perceptual.

Physiological limitations refer to the physical attributes and health of the visual system. This includes factors such as the functionality of the eyes, the efficacy of the optic nerves, and the processing capabilities of the brain. Any impairment in these areas can hinder the ability to see clearly or perceive details during the day.

Perceptual limitations involve how the brain interprets the visual information received from the eyes. This includes factors such as attention, focus, and the ability to process visual cues. Perceptual limitations can lead to difficulties in identifying objects, judging distances, or recognizing patterns, even when the physiological capacity for vision is intact.

In combination, these two categories address both the biological and cognitive aspects of vision, emphasizing that day vision can be limited not just by the physical health of the eyes but also by the interpretation of visual stimuli by the brain.