AS TO SOUNDNESS. ii 



LECTURE II. 



Examination of Eyes (continued) — Tension — Oblique or Focal 

 Illumination — Catoptric Test — The Conjunctiva — Cornea — 

 Iris — -Corpora Nigra — Ruptured Lens Capsule — Mirror of 

 Ophthalmoscope of very great use — Horse is now brought out 

 of Stable — Shaky Fore Legs — Bent Fore Legs. 



Gentlemen, — At our last meeting you will remember 

 that we had brought the horse out of his stall, and 

 having closed the door of the stable, were examin- 

 ing his eyes by the light over the door. I men- 

 tioned trying the tension of the two eyes, and shall 

 only further observe that so much is tension resorted 

 to as a test in the sister profession, that Mr. Bowman, 

 of London, the distinguished oculist, indicates nine 

 degrees of tension. We ought at least to distinguish 

 three degrees : i, normal; 2, increased; 3, diminished. 

 The anterior half of the eye, when apparently sound, 

 or, still more, when evidently affected, claims our 

 attention, seeing that the tension test and the relative 

 size test have disposed of the posterior half satisfac- 

 torily. I mean by the anterior half of the eye, the 

 conjunctiva, cornea, iris, and the lens, with its capsule ; 

 the aqueous humour seldom suffering, so far as we 



