A manual of the diseases of the eye, or, Treatise on ophthalmology / by S. Littell ; revised and enlarged, by Hugh Houston.

Date:
1838
Catalogue details

Licence: Public Domain Mark

Credit: A manual of the diseases of the eye, or, Treatise on ophthalmology / by S. Littell ; revised and enlarged, by Hugh Houston. 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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    which that membrane is designed to protect; it is some- times burst by the violence of a blow^ and concussion of the retina, internal extravasation, and amaurosis, are almost invariable consequences. [[Wounds of the sclerotic tunic sometimes occasion a most intense inflammation, which frequently destroys vision. Wounds of the ciliary ligament often excite iritis, whilst those of the choroid coat are followed by effusion of blood between the tunics, or into the chambers of the eye.] There is little hope of preserving vision in such cases, and suppuration can only be averted by the most active antiphlogistic treatment. By some writers, union is said never to take place after division or puncture of the scle- rotica, but this statement is contrary to what we might, a priori, have anticipated, and is, moreover, contradicted by the observation of others. WOUNDS OF THE IRIS. I The iris is occasionally separated from its ciliary con- nexions by a fall or blow, and an adventitious pupil is thus formed which may give rise to much inconvenience. The newly made opening is generally soon obliterated, but when this does not happen, and the confusion of vision is very considerable, it may be proper to divide the inter- vening portion of the membrane, and thus unite the two apertures. Foreign bodies which have penetrated the eye, sometimes lodge in the iris; but in general no interference is required, unless they be large and produce much irrita- tion. Absorption of the substance of the iris, to a greater or less extent, in consequence of local injury, is not an unfrequent occurrence; and, in some instances, the pupil