A case of microphthalmus with upper-lid cyst : clinical report / by Charles H. May ; pathological report by Ward A. Holden.

  • May, Charles Henry, 1861-1943.
Date:
[1906]
Catalogue details

Licence: In copyright

Credit: A case of microphthalmus with upper-lid cyst : clinical report / by Charles H. May ; pathological report by Ward A. Holden. 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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    But here and there along the margins of the retina are single cells, or groups of cells, with large nuclei and large bodies which are to be considered embryonic retinal cells which have not yet developed. Now at various points on the outer surface of the retina these cells have proliferated, and, assuming a spindle form, have pushed perpendicularly into the retina like ependyma cells, and then have formed what in sections appear as spirals or as circles with a fine basal membrane, through which the large basal cells send fila- ments into the cavity (Figs. 5 and 6 Text-Plate XIII.). Rows of smaller cells, gradually assuming the characteristics of ordinary glia cells, surround the large basal cells, and the rosette is formed. The larger cells push into the neuroglia tissue without being directly connected with it, but the smaller peripheral cells in the rosettes send their processes out into the neuroglia with which they are in intimate con- nection. The principal cells in these rosettes are seen to develop atypically from embryonic cells which in their natural course would have become rods and cones.