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  • Title: Measurement of retinal blood flow in diabetes by the blue-light entoptic phenomenon.
    Author: Fallon TJ, Chowiencyzk P, Kohner EM.
    Journal: Br J Ophthalmol; 1986 Jan; 70(1):43-6. PubMed ID: 3947600.
    Abstract:
    Retinal blood flow velocity was measured in 24 normal volunteers and compared with the results obtained in 101 diabetics at different stages of retinopathy. The blue-light entoptic phenomenon was used to measure retinal flow velocity. Results showed that there was a significantly higher capillary flow velocity in those patients with background retinopathy (0.74 +/- 0.32 mms/s) over the group of normals (0.54 +/- 0.19 mm/s) and those diabetics with no retinopathy (0.51 +/- 0.24 mm/s). Retinal flow velocity was reduced at the preproliferative stage of retinopathy to 0.37 +/- 0.2 mm/s. Proliferative retinopathy showed a slightly greater flow velocity (0.56 +/- 0.27 mm/s), which was reduced following photocoagulation (0.42 +/- 0.14 mm/s).
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