The Special Senses 



249 



388. The Sclerotic Coat. The sclerotic coat is the outside 

 layer and enclosing membrane of the eyeball. It is a tough 

 fibrous coat for the protection and maintenance of the 

 shape of the eye. It is white and glistening in appear- 

 ance ; the part of it which is visible is known as " the white 



SUPERIOR REGIUS 



CILIARY PROCESSES 

 SUSPENSORY LIGAMENT 



SUSPENSORY LIGAMENT 

 CILIARY PROCESSES 



OPTIC NER\E 



CHOROID 



-INFERIOR RECTIIJ. 



FIG. 129. Section of the Human Eye. 



of tne eye." To this coat, which serves as a kind of 

 framework for the eye, are attached the muscles which 

 move the eyeball. 



389. The Cornea. In front of the globe the sclerotic 

 passes into a transparent circular portion forming a kind of 

 window, through which one can see into the interior. This 

 is the cornea, a clear, transparent, circular disk, which fits 



