There's two regions during the retina, called the deep and shallow fovea, which have been specialized for acute eyesight.[forty two] These locations include the best density of photoreceptors, and provide the best details of visual acuity. The deep fovea details forward at an approximate 45° angle, although the shallow fovea https://one-bookmark.com/story20292718/what-does-petsky-unique-value-mean