Observations on the structure of the central fovea of the human eye / C. H. Golding Bird and E. A. Schäfer.

  • Golding-Bird, C. H. (Cuthbert Hilton), 1848-1939.
Date:
[1895]
Catalogue details

Licence: Public Domain Mark

Credit: Observations on the structure of the central fovea of the human eye / C. H. Golding Bird and E. A. Schäfer. 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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    middle the cone-nuclei are shown as somewhat removed from the limitans externa, but traced to the side they very soon come to lie up against that membrane. The ganglion-cells are spherical. The oblique direction of the fibres of the inner granules (bipolars) is clearly indicated. Although no measurements are given of the diameter of the fovea depicted, to judge by the stated magnification of the figure its width is about 0-75 mm. and its depth about the same. The section is expressly stated to be in the vertical meridian. The close resemblance between the human fovea and that of the chameleon, which has also been described by Hulke *) is specially insisted on. F. Merkel2) gives a figure and description of the central fovea which seems to be based upon specimens so ill-preserved as to be of Fig. 1. Diagram of central fovea (M. Schultze). little use towards the elucidation of its structure. It is noteworthy however that he also like Hulke, represents the external limiting membrane as flat and the cones of the same length throughout. It is here that we first find the ganglion-cells described as bipolar. The diagram of the structure of a section through the macula lutea and fovea centralis of a human retina which was given in 1872 by Max Schultze in his article upon the retina3) is almost too well- known to need description, for it has been copied into nearly all text ') .Tourn. of Anatomy and Physiology. 1S67. Vol. I. 2) Ueber die Macula lutea des Menschen etc. Leipzig 1870. 3) Strieker's Handbuch der Lehre von den Geweben. Leipzig 187«? This diagram has a general similarity to two diagrammatic figures of sections trough the fovea, described by Schultze in Bd. II of the Arch. f. mikr. Anatomie and i ncation, as will subsequently be noticed. 1*