Binocular inhibition occurs when binocular performance is less than monocular performance. Depth perception results from many monocular and binocular visual clues. Sighting is optical, and carried out through an M112/3 combined monocular telescope and binocular periscope. Maximum binocular summation occurs when monocular sensitivities are equal. Overall, chromostereopsis involves cortical areas that underlie depth processing for both monocular and binocular cues. The binocular visual field is the superimposition of the two monocular fields. There are various types of possibilities when comparing binocular performance to monocular. He published a series of papers on monocular and binocular vision, and also on psychology. The creation of careful and accurate micrographs requires a microscopical technique using a monocular eyepiece. Prey is located using monocular depth perception, not stereopsis. The horse has a wide field of monocular vision, as well as good visual acuity. Both monocular and stereoscopic Kromskop viewers were made. The optical design of fundus cameras is based on the principle of monocular indirect ophthalmoscopy. Perception of depth, from monocular cues such as size, perspective, and motion parallax remains normal. This is a different disease from retinal migraine, which is monocular (only one eye).