Visual field of the ferret (Mustela putorius furo), rat (Rattus norvegicus), and tree shrew (Tupaia belangeri).

ABSTRACT: To describe the visual field of three common model species in vision science to understand the organization of their visual perceptual experience and contribute to continued studies of visual processing. Visual fields were measured using an ophthalmoscopic reflex technique in four common ferrets, four albino rats, and six northern tree shrews. Animals were anesthetized to avoid stress and the midpoint between their eyes was centered inside a spherical space. A rotating perimetric arm was manipulated in 10° increments around the head. At each increment, direct ophthalmoscopy was used to visualize limits of the retinal reflex for each eye, the overlap being the binocular visual field. Mean binocularity in the horizontal plane was 63.7 ± 5.1°, 79.1 ± 7.4°, and 53.6 ± 12.0° in the ferret, rat,

SUBMITTER: Morris JM 

PROVIDER: S-EPMC12629130 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature