The hyaloid canal and its relation to cyclitic exudation / by Angus M'Gillivray.

  • MacGillivray, Angus.
Date:
1898
Catalogue details

Licence: Public Domain Mark

Credit: The hyaloid canal and its relation to cyclitic exudation / by Angus M'Gillivray. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    Sooner or later contraction of the cast sets in, with the result that the part corresponding to the patellary fossa gets dragged backwards into the vitreous cavity by the contracting hyaloid portion, and assumes the appearance of a hollow cone or bell tent, adherent by its base to the ciliary body all round, the apex being directed backwards towards the optic disc. Dur- ing the formation of this conical protrusion into the vitreous cavity the vitreous becomes displaced backwards and outwards, and in very severe cases, as when complicated with suppuration, the whole of the vitreous may be displaced by the exudation. In support of this view a series of eyes mounted in glycer- ine jelly, showing the condition described, was exhibited. The following are brief notes of the case in which the condition was first observed. Mrs S., set. fifty, received an injury some thirty years previously, to the left eye, causing iridodialysis of about one-third of the periphery of the iris, corresponding to the upper and outer portion. The pupil was somewhat oval in shape, and displaced downwards and inwards, i.e., away from the rent in the iris. The lens and fundus, readily seen through the displaced pupil and the rent at the periphery, were found to be normal. The eye was quiet and showed no signs of recent inflammatory mischief. Vision was six-ninths, and with -f2D Sph. she could read Jaeger i at I 2 inches. Six weeks after her first visit she returned, complaining of pain and discom- fort in the injured eye. On exam- ination it was found that she was suffering from severe iridocyclitis, which reduced the vision to little more than hand movements. The eye eventually made a good recovery, and remained well for some months, when a severe relapse occurred. On this occasion glaucoma supervened, and the eye went gradu- ally from bad to worse. Enucleation was performed on account of the excruciating pain. The eye was preserved in formol, and mounted in glycerine jelly. While a section was being made, the lens unfortunately became displaced, so that its exact relation to the surrounding parts could not be determined. On examination, the following very interesting and unusual con-