Ophthalmoscopic characteristics in sheep and goats: comparative study.
The ocular fundus was examined in 40 goat eyes and 40 sheep eyes by studying ophthalmoscopic characteristics and retinograms. Similarities and differing characteristics were described. In common: tapetal colour; peripheral yellowish area surrounding the Winslow stars; unpigmented areas in the non-tapetal zone; a great amount of myelin in the optic disc; the Bergmeister's papilla and the holoangiotic retinal vascular pattern. Differences: big size of the Winslow stars in goats; myelinizated fibre over the non-tapetal zone in sheep; shape, position and myelin distribution of the optic disc; and the presence of a 'primary artery' in goats.
Galán
A
A
Department of Animal Medicine and Surgery, University of Cordoba, Spain.
Martín-Suárez
E Ma
EM
Molleda
J Ma
JM
D000818:Animals; D005123:Eye / Q000033:anatomy & histology*; D005654:Fundus Oculi; D006041:Goats / Q000033:anatomy & histology*; D009887:Ophthalmoscopy / Q000379:methods / Q000662:veterinary*; D010858:Pigmentation; D012756:Sheep / Q000033:anatomy & histology*; D013045:Species Specificity