Inquiries respecting the anatomy of the eye / [Arthur Jacob].

  • Arthur Jacob
Date:
1823
Catalogue details

Licence: Public Domain Mark

Credit: Inquiries respecting the anatomy of the eye / [Arthur Jacob]. Source: Wellcome Collection.

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    With all the care I could bestow, 1 have, however, never succeeded in separating this layer from the vitreous humour further. If the maceration be con¬ tinued for a few days longer, the vascular layer of the retina gives way, the larger vessels alone re¬ maining attached at the original line of termina¬ tion of the retina, and appearing to enter the hya¬ loid membrane at this part; the appearance which at first so much resembled the vascular layer pro- ceeding towards the lens, remaining unchanged, being, in fact, part of the vitreous humour itself. The circumstance which has most strengthened the notion of the retina being continued forward to the lens is, that often on raising the choroid and ciliary processes from the vitreous humour, we find those processes covered in several places by a fine semi-transparent membrane insinuated between the folds; this is supposed to be the vascular layer of the retina, but is really the corresponding part of the hyaloid membrane which is torn ■ up, being firmly united to this part of the choroid. If the sclerotic, choroid, iris, and retina, be removed one or two days after death, leaving the vitreous hu¬ mour with the lens imbedded on its anterior part, we observe a number of strive on the vitreous hu¬ mour converging toward the circumference of the lens, corresponding in number, size, and form, to the ciliary processes, giving the same appearance collectively that the circle of ciliary processes, or corpus ciliare does on the choroid, and narrowed toward the nasal side as the corpus ciliare is. This
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