Atlas of the external diseases of the eye : including a brief treatise on the pathology and treatment / by O. Haab ; Authorized translation from the German, edited by G.E. de Schweinitz.

  • Haab O. (Otto), 1850-1931.
Date:
1899
Catalogue details

Licence: Public Domain Mark

Credit: Atlas of the external diseases of the eye : including a brief treatise on the pathology and treatment / by O. Haab ; Authorized translation from the German, edited by G.E. de Schweinitz. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    of the .superficial tissues, and later penetrates more deeply, so that perforation often occurs, followed by prolapse of the iris and, finally, panophthalmitis. ' It appears from the investigations of Uhthofif, Axen- feld, and others that the serpiginous ulcer is almost always caused by the Frdnlrl- Welch.'iclbaum jmewinococciw, while the other purulent ulcers of the cornea are due to the action of staphijlococci and drcptocoeci (much less fre- quently to aspergillus), and only in rare instances to pneu- mococci. Among these other forms of hypo})yon-keratitis we in- clude the purulent ulcerations which occur in the cour.se of gonorrheal and diphtheritic conjunctivitis, and in ma- rasmic infants who are afflicted with, and eventually die of, grave digestive disturbances; also keratitis neuropara- lijtica, caused by paralysis of the trifacial nerve. The.se forms of purulent keratitis are capable of causing quite as extensive destruction in the eye as the serj)iginous ulcer. The invariable termination of all ])urnlent ulcer.s, be they large or small, is a dense, cloudy scar or leukoma, which usually produces a permanent visual di.sturbance, as it is situated wholly or partly within the pupillary re- gion. If the perforation is .small, the result is a mere adhesion of the iris (paJherent leukoma); on the other hand, the scar of a large perforation may become distended and even give rise to a partial or total corneal staphyloma. Small nlcers .sometimes leave a membrane of inflammatory exudate in the })uj)il, which interferes with vision. If ad- hesion of the iris to the capsule takes place along the en- tire puj)illary margin, secondary (/laucoma is apt to de- velop and iridectomy becomes neces.sary ; in fact, anv adherent leukoma may give rise sooner or later to second- ary glaucoma. Sloughing of the entire cornea is usuallv followed by prola])se of the lens, and, finally, p)hthisis Irulbi. The prognosis in all forms of hy]K)])yon-keratitis, and especially in .serpiginous ulcer, is always exceedingly grave.