In philosophy of mind, the difference between perception & misperception is seen in terms of accuracy (perception is accurate while misperception is inaccurate); but perceptual experience actually involves widespread inaccuracy

Perceptual precision. Adrienne Prettyman. Philosophical Psychology, Volume 32, 2019 - Issue 6, Pages 923-944. https://doi.org/10.1080/09515089.2019.1598765

ABSTRACT: The standard view in philosophy of mind is that the way to understand the difference between perception and misperception is in terms of accuracy. On this view, perception is accurate while misperception is inaccurate. However, there is some evidence (albeit controversial evidence) that perceptual experience actually involves widespread inaccuracy. I add to that evidence in the paper. Then I point toward a way of understanding the difference between perception and misperception, not in terms of accuracy alone, but in terms of precision. That is, I argue that perceptual experience is designed to enable more fine-grained discrimination among the properties that are most useful for action, even if that involves inaccuracy. The view in this paper motivates a new account of illusion, on which illusions are imprecise as well as inaccurate. I call this the Precision Account of Illusion.

KEYWORDS: Perception, illusion, psychology, philosophy of mind