July 1973
Volume 12, Issue 7
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Articles  |   July 1973
Is there a Potential Defect in the Blood-Retinal Barrier at the Choroidal Level of the Optic Nerve Canal?
Author Affiliations
  • ADOLPH I. COHEN
    Department of Ophthalmology, Washington University School of Medicine, St. Louis, Mo. 63110
Investigative Ophthalmology & Visual Science July 1973, Vol.12, 513-519. doi:
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      ADOLPH I. COHEN; Is there a Potential Defect in the Blood-Retinal Barrier at the Choroidal Level of the Optic Nerve Canal?. Invest. Ophthalmol. Vis. Sci. 1973;12(7):513-519.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

The zone where the axons of the retinal ganglion cells bypass the retina and choroid in leaving the eye of the rhesus monkey was examined by electron microscopy. It was observed that the connective tissue space containing Bruch's "membrane" reached the astrocytic sheath over the optic axons. This space was also continuous with similar space about marginal capillaries and the latter space likewise reached the glial surface over the optic axons. Finally, the basement lamina associated with the pigment epithelial cells became confluent with the basement laminae of the astroglia at the optic canal. The data suggest potential anatomic defects in the blood-ocular barrier in this region.

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