CHAPTER X. 



THE CILIARY BODY. 



Ciliary Body. — Between the iris and the ora serrata 

 (anterior limit of the retina) lies the ciliary hody, which 

 consists of the cilisry processes and muscles. It is the 

 source from which the lens and vitreous derives 

 nourishment largely. Is composed of two portions — 

 (1) a muscular and (2) a pigmented and vascular portion. 

 Around the crystalline lens there is a wide black circle, 

 the ciliary processes, forming regular radiating folds, 

 which project by their inner extremities inward. There 



are about 120 of these 

 folds, composed of connec- 

 tive tissue, which is con- 

 tinuous with that of the 

 iris and pectinate liga- 

 ment; also of blood ves- 

 sels, convoluted, and cov- 

 ered over all by a layer of 

 pigment. From the fur- 

 Fig, 54, rows that separate these 



processes posteriorly we see a hyaline structure ex- 

 tending, that constitutes the zonule of Zinn, which goes 



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