116 VETERINARY OPHTHALMOLOGY. 



ance is not marked, operative interference is not imper- 

 ative. The horse would be a shyer after removal, as 

 the rays of light would not he focused on the retina. 

 Jteclination or depression of the lens into the vitreous 

 has been done, but it is dangerous, the lens being apt ta 

 set up hyalitis, etc. 



Ectopia Lentis or dislocation of the lens, is generally 

 the result of injury. May be spontaneous and has been 

 congenital, from weakening of the zonule of Zinn. It 

 may also be complete or partial. 



