Remarks on effusion of blood within the eyeball / by C. Lockhart Robertson.

  • C. Lockhart Robertson
Date:
[1845?]
Catalogue details

Licence: Public Domain Mark

Credit: Remarks on effusion of blood within the eyeball / by C. Lockhart Robertson. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

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    EXTRACTED FROM THE NORTHERN JOURNAL OF MEDICINE FOR AUGUST 1845. REMARKS ON EFFUSION OF BLOOD WITHIN THE EYEBALL. By C. LOCKHART ROBERTSON, M.D. When effusion of blood into tlie eye is the result of injury, it generally takes place into the aqueous humour. The iris and cili- ary processes being the only textures in this part supplied with vessels conveying red blood, the effusion must evidently arise from one or other of these. When present in the anterior chamber only, it must proceed from the vessels on the anterior surface of the iris, and the effused blood may be equally diffused through the aqueous humour, tinging the whole of a deep red hue, or lie unmixed at the junction of the iris with the cornea. On the other hand, when blood is effused from the ciliary pro- cesses or posterior surface of the iris, and presents itself in the anterior chamber also, it must have escaped in quantity suffi- cient to have enabled it to pass through the pupil, and, in such instances, the whole of the aqueous humour will be found uni- formly tinged with the colouring matter of the blood. Such cases are of very rare occurrence, probably owing to the distention of the eyeball, caused by the effused blood acting mechanically as a means of compressing the blood-vessels, and arresting their dis- charge before such a result could take place. When the effusion of blood into the posterior chamber is in smaller quantity, and does not reach the pupillary margin, it will of course escape observation. The effusions of blood into the aqueous humour are usually absorbed in the course of three or four days, provided no inflam- mation supervene.