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

  • Jacob, Arthur, 1790-1874
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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    not carry red blood. I have not myself succeeded in injecting the vessels of the lens, but I have not repeated the trial so often as to make me despair of accomplishing it, more especially as Albinus, an anatomist whose accuracy is universally acknow¬ ledged, asserts, that after a successful injection of the capsule of the lens, he could see a vessel pass¬ ing into the centre of the lens itself*. Lobe, who was his pupil, bears testimony to thist. The assertion that the lens is not connected with its capsule, 1 think I can show to be incorrect: it has been made from want of care in pursuing the investigation, and from a notion that a fluid exists throughout between the lens and its capsule. When the capsule is opened, its elasticity causes it to separate from the lens \ especially if the eye be examined some days after death, or has been kept in water, as then the lens swells, and often even bursts the capsule and protrudes through the open¬ ing, by which the connexion is destroyed. I have however satisfied myself that the lens is connected with its capsule (and that connexion by no means slight) by the following method. I remove the cornea and iris from an eye, within a few hours after death, and place it in water, then with a pair of sharp pointed scissors I divide the capsule all round at the circumference of the lens, taking care that the division is made behind the anterior con- * Annotationes Academicse, lib. i. cap. 7. t Lobe, de Oculo Hum. in Idalleri Disp. Anal.