118 VETERINAEY OPHTHALMOLOGY. 



Fig. 63. 



Scheme of the Central Visual Apparatus.— R, Retina, shaded where It l3 

 Innervated by the left, clear where innervated by the right hemisphere : 

 No, Optic Nerve ; Ch, chiasma ; Too, Tractus Opticus ; CM, Melnerts 

 commissure ; CG, Guddens commissure, b, lateral tract root ; m, median 

 tract root ; Tho, thalamus opticus ; Cgl, corpus geniculatum laterale ; 

 Qa, notes ; Bqa, brachia anterior ; Rd, direct cortical tract root ; Ss, 

 saggital medullary layer of occipital lobe ; Co, cortex (chiefly of the 

 cuneus) ; Lm, median tract.— {Schleife). 



