On the development and abnormalities of the zonule of zinn / by E. Treacher Collins.

  • Collins, E. Treacher (Edward Treacher), 1862-1937.
Date:
[1892]
Catalogue details

Licence: Public Domain Mark

Credit: On the development and abnormalities of the zonule of zinn / by E. Treacher Collins. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

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    Microscopical Examination.—Tlie iris has attached to its anterior surface at its pupillaiy margin on one side a process composed of cells and a loose fibrous network, the other exti^emity of which floats free in the anterior chamber in the pupil. It is evidently a remnant of the pupillary membrane. The two layers of pigment on the posterior surface of the iris have become somewhat separated towards the pupillary margin, and on one side there seems to have been some slight adhesion of the iris to the anterior capsule of the lens. Fig. 3.—Represents a diagrammatic section of tlie eyeball in Case 1. The lens is composed in greater part of a network of hyaline substance with large irregular spaces in it. Its capsule is wrinkled, and has cells lining it throughout its entire circum- ference. In the anterior part of the lens in some of the sec- tions there is a mass of nucleated cells. Behind the posterior capsule of the lens, and intimately in contact with it, is a collection of fibres and cells, some round and some spindle- shaped. This collection is thickest in the centre, and tapers off on each side, where some of the ciliary processes are ad- herent to it. The hyaloid artery passes into it, and breaks up there into branches. The ciliary processes are narrow; in some places they lie in contact with the lens capsule. The foremost ones have, stretching between them and the lens capsule, fibres like the fibres of the suspensory ligament, with every here and there nuclei lying on them. (See Figs. 1 and 2.)