Microphthalmos with cystic protrusion from the globe / by E. Treacher Collins.

  • Collins, E. Treacher (Edward Treacher), 1862-1937
Date:
[1897]
Catalogue details

Licence: Public Domain Mark

Credit: Microphthalmos with cystic protrusion from the globe / 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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    may be a coloboma present (Lang's case ; Case 1,' Trans. Ophth. Soc.,' vol. xiii, L. eye ; Case 2, vol. xiii; Rolston's case). The ciliary processes often become drawn backwards, being elongated and thin (Case 1, f Trans. Ophth. Soc./ vol. xiii, L. eye; Rolston's case; Case 2 in this paper). The pigment epithelium overlying them may show dis- turbance (Case 1 in this paper; Rolston's case), and sometimes the unpigmented layer of the pars ciliaris retinse is raised in folds, which shows imperfect coapta- tion of the two layers of the secondary optic vesicle in that position (Case 2 in this paper). The lens is generally imperfectly developed and cata- ractous,usually spherical in shape (Lang's case [2] ; Case 1, ' Trans. Ophth. Soc.,' vol. xiii, L. eye ; Case 2, vol. xiii; Rolston's case ; Case 1 in this paper), and sometimes displaced. The vitreous humour is often imperfectly formed, being in part replaced by a kind of fibrous tissue which may have blood-vessels coursing through it (Case 1, ' Trans. Ophth. Soc.,' vol. xiii, L. eye ; Rolston's case ; Case 2 in this paper). This formation of fibrous tissue in place of vitreous humour, apart from any signs of inflammation, is a condition to which I particularly wish to direct your attention. It has been termed by Hess (7) atypical development of the vitreous humour,—that is to say, the mesoblast which should have formed vitreous has developed in an atypical way and formed fibrous tissue. I have met with this malformed vitreous humour, in eyes which I have examined pathologically, in various positions. I have found it forming a membrane of vary- ing thickness behind the lens, into which sometimes the central hyaloid artery has passed and divided up; as irregular bands passing forwards from the optic disc; as a thick mass on the inner surface of the globe in the region of the ocular cleft ; and in one of the specimens which 1 am bringing before you for the first time this evening, it would seem, that the mesoblast which should