Resumen de The Equine Fundus
The equine retinal blood vessels are limited to the direct surrounding of the optic disc (paurangiotic retina), and extend a short distance into the nerve fiber layer.
Choroidal blood vessels can be seen in lightly pigmented fundi, and should not be confused with retinal blood vessels or hemorrhage.
The equine optic disc is elliptical, orange-pink in color, and located in the nontapetum fundus; it is positioned slightly ventrolateral to the posterior pole of the globe.
Fundoscopy should be performed in dim light, to reduce glare from the corneal surface, and help with mydriasis. To view the optic disc the examiner should stand slightly in front of the horse and look slightly down.
Due to their wider field of view, Panoptic and indirect ophthalmoscopy are the preferred methods for screening for fundic lesions, while the greater magnification of the direct ophthalmoscope should be utilized for close examination of lesions.
