114 OPHTHALMOLOGY FOR VETERINARIANS 



from the posterior pupillary border assists in cementing 

 the border of the pupil to the anterior capsule of the 

 lens, either partially or completely. These adhesions 

 are called posterior synechiae. When the iris is com- 

 pletely adherent it is known as seclusion of the pupil; 

 when this occurs, together with the formation of a mem- 

 brane over the pupillary area, it is called occlusion of the 

 pupil. When this takes place the eye becomes bUnd. 

 Occluded pupil has frequently been found in the horse 

 as a sequel of iritis. 



An iritis and a cycHtis — iridocyclitis — often occur at 

 the same time; however, an inflammation of one or the 

 other of these bodies may be more pronounced. 



CycHtis is nearly always accompanied by tenderness 

 over the ciliary region, and the congestion is more 

 marked over this locahty. According to Law, "it occurs 

 in domestic animals, as described by Moller, but he fails 

 to furnish instances of its diagnosis during Hfe, and it is 

 not likely to be recognized in living animals. Besides the 

 usual signs of iritis, there is extreme tenderness on 

 pressure around the anterior border of the sclera — it 

 is quite Hkely to be complicated by suppuration and to 

 go on to panophthalmitis." 



Symptoms of Iritis.— Iriih is accompanied by pain, 

 redness of the conjunctiva, small pupil, which reacts 

 very sluggishly or not at all, discoloration of the iris, 

 and the formation of synechise, which are more notice- 

 able when a mydriatic is used. The tension is normal 



