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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    also be very severe at night, 'when it gives rise to exces- sive lachrymation. On the other hand, there are insidious cases of iritis, in which the patient is hardly conscious of inflammation ; persons are sometimes found to have synechije who do not remember ever to have had inflamed eyes. Iritis may be present in one eye only ; and, if it recurs, attacks the same eye; or it may show a tendency to affect both eyes, so that the second eye becomes involved sooner or later. Cifclitifi presents other manifestations of inflammatory exudation : 1. Precipitates on the posterior lamina of the cornea, ranging in size from a mere point to 2 mm., consisting of circular accumulations of round cells, mixed with pigment or flbrin, gray or brown in color, according to the nature of the pigment. They are seen chiefly on the lower por- tion of the cornea and may be so minute as to be detected oidy with the aid of a loupe and lateral illumination, or with the ophthalmoscope under direct light. They are often limited to the inferior tpiadrant of the cornea—i. e., to a triangular area, the apex of which lies in the pupil. The exudation in cyclitis may also take the form of liypo- ])yon or deposit grayish-white juasses Avhich a])j)car float- ing in the inferior and lateral portions of the anterior chamber. 2. The exudation may be })rinci})ally into the jiosterior chamber and produce a general attachment of the .surfaee of the iris to the lens-eapsule by a com])lete posterior synechia. This is recognized by the gradual retraction of the iris against the border of the lens as the exudate con- tracts, and the deepening of the anterior chamber at its perij)hery. In this form of ciliary attachment dilatation of tlie pupil is complete, or ab.sent altogether. 3. The exudate may occupy the vitreous chamber, es- ])e(!ially the anterior ])ortion, and, if extensive, produce more or less marked impairment of the visual j)ower. The exudate behind the lens in course of time becomes