THE SCLEROTIC. 



225 



The sclerotic is the outermost tunic of the eye. Its anterior 

 portion is modified to form the cornea. It is a thick, dense 

 capsule, made up of lamina? of white fibres, between which are 



Iris 



FIG. 90. 



Cornea 



Anterior Chamber 



Posterior Chamber 

 Ciliary Body 

 Ciliary Processes 



Canal of. 

 Petit 



Canal of 

 Schlemm 



BY VITREOUS HUMOUR 



Nerve sheath 



Nerve 



Canal for central 

 Artery 



Horizontal section through eye (Allen). 



flattened stellate connective-tissue cells and a few elastic 

 fibres. Its vascular supply is scanty, but the communicating 

 pericellular spaces form a network of lymph-passages. 



15 Hist. 



