. A treatise on the diseases of the eye. ogy, x. 4.)—B.] ^ Collyria are best applied with a camels-liair brush or the hollow part of a quill pen,which is not to be cut pointed (as for writing), but rounded off, a small hole being cutin the upper part, so that the air may enter and force out the liquid. The surgeonshould stand in front of the patient, and, directing him to look upwards, raise the upperlid with the forefinger of his left hand, and depress (and slightly evert) the lower lidwith the thumb, in this way a little pouch is formed between the lower lid and the eje-ball, into which the
. A treatise on the diseases of the eye. ogy, x. 4.)—B.] ^ Collyria are best applied with a camels-liair brush or the hollow part of a quill pen,which is not to be cut pointed (as for writing), but rounded off, a small hole being cutin the upper part, so that the air may enter and force out the liquid. The surgeonshould stand in front of the patient, and, directing him to look upwards, raise the upperlid with the forefinger of his left hand, and depress (and slightly evert) the lower lidwith the thumb, in this way a little pouch is formed between the lower lid and the eje-ball, into which the drop is to be poured. The patient should then rub the lids welltogether, so that the collyrium may come in contact with the whole of the conjunctivalsurface. Instead of the quill or brush, the stopper of a drop-bottle, as sold by n:iostchemists, may be used. ^ Lapis divinus is composed of equal parts of sulphate of copper, nitrate of potassium,.and alum, which ingredients are to be moulded into sticks. 136 DISEASES OF THE 2.—CATAEKHAL OPHTHALMIAi [CONJUNCTIVITIS—B.]. The term simple conjunctivitis should, I think, be altogether is, in fact, only the mildest form of catarrhal ophthalmia, and hence thereis no reason to make it a distinct disease. On everting the eyelids in a case of catarrhal ophthalmia, we notice thatthe conjunctiva is red, vascular, and swollen, so that the Meibomian glands are nearly or entirely hidden. The hyperae-[Fig. 59. jnia commences at the tarsal portion of the conjunctiva, to which it may indeed remainconfined in very mild cases. Generally, how-ever, it soon extends to the retro-tarsal fold,caruncle, semilunar fold, and ocular conjunc-tiva, reaching perhaps quite up to the edgeof the cornea. As the disease subsides, thevascularity retraces its steps in the reversedirection. It is important to distinguish thevascularity of the ocular conjunctiva fromthat of the subconjunctival tissue. Theformer is characterized by a supe
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