Morphometry of Diabetic Conjunctival Blood Vessels

      This paper is only available as a PDF. To read, Please Download here.


      Photographs of the bulbar conjunctiva of 56 diabetic and 59 nondiabetic control patients were analyzed by newly developed morphometric techniques. When compared to controls diabetic patients showed: (1) decreased vascularity in the capillary bed but an increased vascularity of the venules with a volume shift in the distribution of blood into the venules; (2) an increased capillary pressure but comparable flow and, therefore, increased capillary resistance; (3) an increase in the range of background density suggesting either focal thickening of the interstitial tissue or variable amounts of fluid within the tissue; (4) a decrease in the percentage of the area occupied by microvessels; and (5) an increase in diffusion distance to all vessels.

      Key words

      To read this article in full you will need to make a payment
      Subscribe to Ophthalmology
      Already a print subscriber? Claim online access
      Already an online subscriber? Sign in
      Institutional Access: Sign in to ScienceDirect


        • Worthen DM
        • Fenton B
        • Zweifach B
        • Rosen P
        Morphometry of conjunctival blood vessels. Concilium Ophthalmologium XXIII, Kyoto.
        Acta. 1978; 2: 1793-1796
        • Fenton B
        Topographical simulation of the blood vessels of the bulbar conjunctiva and application of pressure-flow relationships. Doctoral Thesis: University of California, San DiegoJuly 1980
        • Zweifach BW
        • Lipowsky HH
        Quantitative studies of microcirculatory structure and function. III. Microvascular hemodynamics of cat mesentery and rabbit omentum.
        Circ Res. 1977; 41: 380-390