246 THE FARM DOCTOR. 



would be worse than useless, as without spectacles he could 

 never see things in their right form or position, and would 

 become an incorrigible shyer. Better leave him blind. Cases 

 not due to recurring ophthalmia may be benefited in the long 

 run by applying a drop of phosphorated oil (phosphorus 2 grs. 

 almond-oil 1 oz.) to the eye, daily, for several months. 



PALSY OF THE NERVE OF SIGHT. AMAUROSIS. GLASS EVES. 



Causes. — Congestion, tumours, dropsy, or other diseases of 

 the brain. Injury to the nerve of sight by pressure or other- 

 wise. Inflammation with exudation into the retina. Excess 

 of light. It may be symptomatic from overloaded stomach, 

 from bloodlessness, and sometimes from gestation. 



Symptoms. — Eyes unnaturally clear from wide dilatation of 

 the pupils. Failure of the pupils to contract when exposed to 

 light or sunshine, or to dilate in darkness. The subjects do 

 not wince when a feint is made to strike them, unless the hand 

 produces a current of air. The animals step high to avoid 

 obstacles and have very active ears, which are constantly cver- 

 cised to make up for lack of sight. 



Treatment. — If due to removable cause stop this, then blister 

 the cheek or behind the ear, as for ophthalmia, and give nerve 

 stimulants (strychnia, nitrate of silver, etc.). 



Among the other affections of the eye are Glaucoma., the 

 true nature of which can only be ascertained with the ophthal- 

 moscope ; Cance',\ which demands the skill of the anatomist 

 for removal ; Staphyloma or vascular tumour of the cornea ; 

 Worm in the eye [Filatia Oculi), which is to be extracted by 

 skilful puncture ; etc. 



