266 DISEASES OF TUE HOESE. 



then it Is Ciilled idiopathic, or the mischief may be in the optic 

 nerve, which, on dissection, has been found to be the case, and 

 it is tlien called symptomatic ; or it may be sympathetic, when it 

 depends on the existence of disease in some independent organ. 

 Amaurosis has been known to follow stomach staggers, in which 

 cases it has sometimes pi'oved temporary, at others permanent. 

 It has also, in many instances, succeeded excessive loss of blood 

 from hainiorrhnge after castration, and also from ruptured liver. 

 It has appeared, too, in a temporary form during gestation, and 

 also, in many instances, after apoplex)^ 



The treatment must consist in bleedino; from the neck rather 

 extensively, and following this by a dose of physic. Local 

 applications to the eye will be of little service. 



When, however, it proceeds from disease of another part, our 

 attention must be more particularly directed to the recovery of 

 that part, whether it be the stomach, the liver, or any other 

 viscera. Although bleeding is generally advisable at first, it is 

 not always to be followed, but must be regulated by the general 

 health. When the above treatment fails, calomel may be given 

 for some time combined with opium, and, in obstinate cases, 

 strychnia may be tried. — Ed.] 



Worm in the Eye is a frequent complaint in India. Its situ- 

 ation is in the aqueous humour, where the worm is fomid 

 swimming about. It is generally upwards of an inch in length, 

 and often occasions impediment to the sight. 



Mr. Skeavino;ton attributes it to the foulness of the water 

 used in that country, and recommends its removal by puncturing 

 the cornea with a lancet prevented by a little tow from passing 

 too far. The aqueous humour escapes through the incision, and 

 with it the worm. jMr. S. has operated on seven cases suc- 

 cessfully. He does not throw the animal, and prefers an incision 

 opposite the pupil as being less likely to injure the iris. — 

 Ed.] 



CHAP. XL VIII. 



ON LAMENESS FROM STRAINS. 



Lameness Is produced by a variety of causes, so numerous, 

 and often so obscure, that to discover its seat with accuracy 

 and promptitude is a mark of professional acumen to which 

 every young practitioner should aspire. Let him not, how- 

 ever, be led by this consideration to give a hasty opinion in 

 cases of lameness ; but, on the contrary, let him investigate care- 



