CHAPTER IV. 



EXCRETORY APPARATUS. 



Excretory Apparatus (Diseases of). — As a result of in- 

 flammations ; of the conjunctiva and lids ; wounds of 

 the lid; narrowing and stoppage of the canaliculus; 

 may have watering of the eye (Fpiphora). If ob- 

 struction of the canaliculus, slittiiig the canal with a 

 knife modeled by and bearing the name of Agnew is 

 the treatment. This is a narrow-bladed, probe-pointed 





A;::C-.v's Canaliculus Knife 

 Fig. 24. 



knife. Enter the puncta with its probe point, verti- 

 calhj. Remember the anatomical disposition of the 

 canaliculus in the angle of the lid M\i\.foUoio it. The 

 idea is to open the already existing, but obstructed 

 passage, and not to establish a new one. "When entered 

 vertically,— and that takes patience, but the sphincter 

 will yield to persevering pressure — depress the handle 

 of the knife until it is horizontal. Push immrd until 

 you reach the inner wall, keeping the lid on the 

 41 



