. An analytical compendium of the various branches of medical science, for the use and examination of students. Anatomy; Physiology; Surgery; Obstetrics; Medicine; Materia Medica. 114 SURGERY. Entropion^ which is a permanent inversion of the eyelid, often results from tarsal ophthalmia, and it can only be remedied by an operation, such as dissecting off the edges of the eyelids with the lashes and their bulbs; or by removing a transverse fold of the skin beyond the eyelid. Ectropion is an eversion of the eyelid, caused often by a thicken- ing of the conjunctiva from long inflammation. This is
. An analytical compendium of the various branches of medical science, for the use and examination of students. Anatomy; Physiology; Surgery; Obstetrics; Medicine; Materia Medica. 114 SURGERY. Entropion^ which is a permanent inversion of the eyelid, often results from tarsal ophthalmia, and it can only be remedied by an operation, such as dissecting off the edges of the eyelids with the lashes and their bulbs; or by removing a transverse fold of the skin beyond the eyelid. Ectropion is an eversion of the eyelid, caused often by a thicken- ing of the conjunctiva from long inflammation. This is to be cured by bringing the conjunctiva to a healthy condition, by the applica- tion of nitrate of silver or sulphate of copper. Should these remedies fail, a portion of the conjunctiva is to be excised. Ptosis is a falling of the upper eyelid, from a palsy of the third nerve. It is often connected with congestion of the head, and may be a precursor of apoplexy, and should be treated by bleeding, purgatives, mercury, and blisters. If persistent, it may be obviated by removing a fold of the skin from the upper eyelid. DISEASES OF THE LACHRYMAL APPARATUS. Xerophthalmia is a- dryness of the eye, arising either from a want of secretion of the conjunctiva, or, as some suppose, from a deficiency of tears. It is to be remedied by frequently bathing the eye with mucilage. Epiphora is a superabundance of tears, so that they run over the cheeks : it should be distinguished from stillicidium lachrymarurn, which is an overflow in consequence of an obstruction of the chan- nels that convey them to the nose. It arises frequently from scro- fulous inflammation; or from the action of chemical or mechanical agents, cold winds, acrid vapours, &c. The treatment will, of course, vary with the cause. Obstruction of the lachrymal duct, is known by the overflow of the tears, the dryness of the nostril, distension of the sac, and formation of a small tumour. It often leads to inflammation and absc
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