is moved into the light. The acute inflammation gradually subsides, and
about the tenth to the fourteenth day the lids and cornea may appear
normal.

The periods between these acute attacks of ophthalmia may vary from a few
weeks to several months. Severe work, debility and the character of the
ration influence their frequency. It is not uncommon for animals that have
been given a rest to suffer from a second attack on being put to work. The
attendant may observe a hazy or whitish condition of the margin of the
cornea. The upper lid may show an abrupt bend of its margin and a deep
wrinkle. The color of the iris appears to have lost its lustre, and the
aqueous humor and lens may be cloudy. After a variable number of attacks
glaucoma or cataract develops.

_The history_ of the case will enable the attendant to recognize this form
of ophthalmia.

_Treatment_ is unsatisfactory. Preventive measures consist in avoiding
conditions favorable to the production of the disease. This should be
practised so far as possible. At the time the attack occurs, the animal
should be given a cathartic. One pound of Glauber's salts in a drench is to
be preferred. Rest in a darkened stall is indicated. An eye lotion
containing three grains of silver nitrate in one ounce of distilled water
should be applied to the eye three times daily. A water solution of
atropine or eserine should be used for the purpose of relieving the
symptoms of iritis or glaucoma. A very light diet should be fed.

INFECTIOUS OPHTHALMIA OF RUMINANTS.--This occurs as an acute inflammation
of the eyelids and cornea. The disease is highly infectious, affecting all
of the susceptible animals in the herd. It commonly occurs during the late