. The anatomy of the domestic animals. Veterinary anatomy. Fig. 1)97 Sub Eyeball of Horse (Equ.\ 1, .Sclera; 3, chorioidea; S, retina (drawn from chorioidea); 4, ciliary processes; 5, crystalline lens, through which the pupil [G) is seen. C-'^fter Ellenbergor, in Leisering's Atlas.) Fig. <',9S.— Oculi, Seen on Equj TION OF EyEB.\LL of HORSE. 7. Sclera; 2, chorioidea; 3, retina 4. tapetum; 3, optic papilla; G, optic ne Ellenberger, in Leisering's Atlas.) (loosened); rve. (After can l)e stripjjed off the chorioid, leaving most of its outer pigmented layer on the
. The anatomy of the domestic animals. Veterinary anatomy. Fig. 1)97 Sub Eyeball of Horse (Equ.\ 1, .Sclera; 3, chorioidea; S, retina (drawn from chorioidea); 4, ciliary processes; 5, crystalline lens, through which the pupil [G) is seen. C-'^fter Ellenbergor, in Leisering's Atlas.) Fig. <',9S.— Oculi, Seen on Equj TION OF EyEB.\LL of HORSE. 7. Sclera; 2, chorioidea; 3, retina 4. tapetum; 3, optic papilla; G, optic ne Ellenberger, in Leisering's Atlas.) (loosened); rve. (After can l)e stripjjed off the chorioid, leaving most of its outer pigmented layer on the latter. During life it is transparent, except as to its pigmented epithelium, and the reddish appearance of the fundus as viewed by the ophthalmoscope is caused by the l^lood in the network of the choriocapillaris. The entrance of the optic nerve forms a sharply defined, oval, light area, the optic papilla (Papilla ncrvi optici), situated about 15 mm. ventral to the horizontal meridian and 3 to 4 nun. lateral to the vertical meritlian. The central part of the papilla is slightly depressed (Excavatio papilla? n. optici). The tiaiisvi' (Ihmiclrr i)f tin' papilla is ulxnit 6 to 7 mm., and the vciiical aliout 4 to .5 mm. It is comnioiily ,-ii uaird :i hi i Ic i hr iiiariiiii nf the tapetum, but tin- iat irr m;iy extend down somewhat nn ciiln i ol iIm' pa])illa,. 'I he Inwer margin is often indeincl a Htile. In inspec- tion of the I'lnidus with tlie ophthalmoseope numerous fine branches of the artenii eentraUs retinae are seen radiating from the periphery of the papilla. The optic nerve fibers converge from all parts of the pars optica to the papilla, where they collect into btmdles which traverse the lamina cribrosa of the chorioidea and sclera, and constitute the optic nerve. The area centralis retinae is a round spot, 2 to 3 mm. in diameter, situated dorso-lateral to the optic pajiilla; it corre- ' In man the line is finely serrated and is termed the ora serr
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectveterinaryanatomy
