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YS Yang, HR Kang, SD Kim, JD Kim; The Correlation of Venous Filling Time and Peripheral Retina Microcirculation Insufficiency at Each Four Quadrants Using Video-Fluorescein Angiography of Diabetic Retinopathy . Invest. Ophthalmol. Vis. Sci. 2002;43(13):552.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: Diabetic retinopathy usually affects retinal midperiphery outside the vascular arch. As the microciuculation insufficiency progresses it is assumed the 4 quadrants peripheral retinal circulation time would be different. This study was designed to evaluate the difference of the peripheral retina microcirculation time according to local retinopathy state. Method: 21 diabetic retinopathy patients were taken fluorescein angiography (FA) using a scanning laser ophthalmoscope to be seen four quadrant retinal vessels at wide angle covered 90 degree of fundus with scanning method, prospectively. Venous filling time as well as conventional circulation time was checked at each quadrants vessels to evaluate local retinal peripheral circulation insufficiency. Angiographic findings were estimated by each quadrant. Results: The art-to-retinal transit time and arteriovenous passage time were has significant difference among 4 quadrants. Venous filling time was 7.612.04 upper temporal, 7.79 2.31 lower temporal, 7.56 1.96 upper nasal and 7.43 1.98 second at lower temporal quadrant. Venous filling times of each quadrant were correlated with retinal vein diameter, severity of grouped microaneurysms and non-perfusion area (multiple correlation coefficient, r=0.78). Conclusion: The venous filling time of a retinal quadrant could be an indicator for microcirculation insufficiency of the retinal quadrant including retinal periphery.
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