54 OPHTHALMOLOGY FOR VETERINARIANS 



can now be removed and the needle withdrawn, when 

 the lash will be easily extracted, root and all. 



When trichiasis is complete, ablation of the hair- 

 follicles according to Flarer's method is the best to 

 perform. The hd is split posterior to the roots of the 

 lashes, and just anterior to the openings of the meibo- 

 mian ducts, the full length of the lid, transversely, then 

 again split anterior to the lashes, the scalpel meeting 

 the bottom of the first incision, just beyond the roots. 

 The portion containing the cilia, complete, must then 

 be detached, and the wound allowed to heal by granu- 

 lation. 



When the palpebral fissure is contracted by reason 

 of chronic diseases of the conjunctiva, which often 

 causes entropion and trichiasis, an operation known as 

 canthotomy may be performed. A pair of straight, 

 blunt-pointed scissors is placed horizontally, one point 

 beneath the outer canthus and the other above, when 

 the tissues between the blades are divided with one 

 snip. This reheves the pressure of the Hd on the cor- 

 nea and relaxes the tension of the border of the lid. 



Canthoplasty is the term used for this operation 

 when sutures are appHed. These sutures are usually 

 used, one at the extreme angle of the wound and one 

 above and one below, bringing the conjunctiva and 

 skin together (Fig. 20). 



Tarsorrhaphy is performed when it is desired to de- 

 crease the length of the palpebral fissure. A small 



