DISEASES OF THE EYE. 43 
foves of extract of belladonna, and this amaurotic state of the 
pupil is also observed during etherization, and disappears so soon 
as the animal is restore. to consciousness. 
PERcivALL informs us that amaurosis may proceed from some 
abnormal condition of the optic nerve or brain, which may prove, 
as he says, the iast link of a series of marked phenomena, origi 
nating in some remote part of the body, operating sympathetically 
un the nervous system, and, through it, extending to the eye. 
Cases are occasionally met with which may be termed symptomatic 
amaurosis, occasioned by congestion, tumors, or hydrocephalus. 
Symtomatic amaurosis may follow cranial fracture, and, con- 
sequently, depression. In such cases, the skill of the surgeon is 
salled into requisition to trephine the uninjured region of the 
skull, in order to elevate the depressed and fractured parts. Tha 
potent remedy is the removal of the pressure. Amaurosis is oc- 
casionally associated with anemia. Now, anemia is a condition 
of the body which indicates a loss of the circulating fluid, either 
of quantity or quality. The remedy for this condition is carbo- 
naceous food, mineral and vegetable tonics. Preparaticns of iron 
and golden seal are the best remedial agents. 
Symptoms.—I shall now turn the reader’s attention, for a mo- 
ment, to some of the symptoms aitending the amaurotic condition. 
The head of the patient is elevated, and he is known, in popular 
language, as a “star-gazer.” His ears are kept in constant mo- 
tion, one turned backward and the other forward, in quick suc- 
cession, to catch the sound of approaching vehicles, so that he 
may have timely notice of their whereabouts. When started, 
and while walking, the fore-feet are raised from the ground to an 
unnecessary height. This is probably done for the purpose of 
sounding the ground, and, at the same time, of avoiding obstacles 
which may lie in the road; for the sight is defective, and the 
animal must depend more on the senses of hearing and feeling. 
Should such an animal be attached to a vehicle and left alone 
in the street, we shall observe that when an omnibus or heavy- 
loaded wagon approaches him he becomes restless, and exhibita 
signs of fear. Such are the principal symptoms which usually 
acconipany defective sight, or total paralysis of the optic nerve, 
producing amaurosis. : 
Treatment,—Sy mp thetic amaurosis should be treated by means 
of antisvasmodics and Jieratives. One ounce of tincture of asse 
