A practical treatise on the diseases of the eye / by William Mackenzie ; to which is prefixed an anatomical introduction explanatory of a horizontal section of the human eyeball by Thomas Wharton Jones.

Date:
1840
Catalogue details

Licence: Public Domain Mark

Credit: A practical treatise on the diseases of the eye / by William Mackenzie ; to which is prefixed an anatomical introduction explanatory of a horizontal section of the human eyeball by Thomas Wharton Jones. 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.

    149/978
    ENCYSTED TUMOUH NEAR LACllYMAL DUCTS. 1 jigffcr than natural, the aqueous humour not so clear as usual, the crystalline less olW and trans])arent, the vitreous almost reduced to a liquid state, the cyst very . trong and elastic, with a cavity sufficient to contain a large hen’s-egg. There can be little doubt that this was a misunderstood case of jncysted tumour in the lacryraal gland, or, at any rate, of encysted ; orbital tumour, and not at all a carcinoma. ' 1 Ueber die Krankheiten des Thranenorgans, p. 73 ; Wien, 1803. ' Lehre von den Augenkrankheiten ; Vol. ii. p. 397 ; ^Vien, 1817. 3 Op. Cit. p. 90. i * Ibid. p. 94. 3 Philosophical Transactions ; Vol. xlix. Part 1. p. 18; London, 1756. i SECTION VII ENCYSTED TUMOUR IN THE VICINITY OF THE GLANDULiE CONGREGATE: AND LACRYMAL DUCTS. The subject of this section resembles considerably in its nature |1 :he disease which we have last considered. Its seat seems to be the |i orincipal difference ; for the tumour described in the last section is ^ seated in the substance of the superior portion of the lacrymal gland, II ind is supposed by the German ophthalmologists to derive the fluid ‘which it contains from the gland immediately; while the present 1 disease, is seated almost immediately behind the conjunctiva, in the vicinity of the glandulae congregatse, and derives its fluid according 0 Schmidt,‘ from one or more of the lacrymal ducts. Benedict- ! lescrlbes it as a mere dilatation of one of these ducts. Encysted ^ ,umour in the lacrymal gland, produces a series of dangerous ? symptoms, long before it comes into view itself, if ever it comes into I view; whereas, a similar tumour in the vicinity of the glandulae con- I vregatae and lacrymal ducts, from its superficial situation, is neither I oroductive of so destructive effects, nor can it remain so long concealed. ?» Symptoms. As soon as it has reached any considerable extent, die present disease manifests itself by the following symptoms. A circumscribed, very elastic swelling, void of pain, is felt immediately Dehind the upper eyelid, towards the temporal side of the orbit. If ^ die tumour has already reached such a degree, as to present through the eyelid the size of a hazel nut, and if we press upon it pretty for- cibly, the patient feels the pressure in the eyeball, and observes fiery spectra before the eye. If, at the same time that we press the tu- I niour from without, we raise the upper eyelid, and, in some measure, I evert it, we see the conjunctiva project in the form of a distended sac, in which we discover fluctuation. When the tumour has reached I the size of a pigeon’s egg, the motions of the eyeball upwards and outwards are impeded; yet, when we raise the upper eyelid in the manner just now mentioned, the patient is immediately able to move , his eye, without difficulty, towards the temple, the eyeball retiring 1 behind th'e tumour, pushing it and the conjunctiva still more for°