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FLUORESCEIN ANGIOGRAPHY OF THE OPTIC DISC AND THE PERIPAPILLARY AREA IN CHRONIC GLAUCOMA

The optic disc receives its vasculature entirely from the ciliary system as was confirmed by Hayreh (1962) in an extensive investigation. In glaucomatous lesions of the optic disc a decreased vascularity of the disc might be expected. This was in fact the main finding in Hayreh’s (1967) fluoresceinstudy in glaucomatous patients. The peripapillary region has special anatomic features as has been demonstrated by Michaelsson (1954) and by Alterman & Henkind (1968) for the retina. The choriocapillaris however is thought to be a continuos layer from the immediate peripapillary region to the ora serrata. This uniformity however has been a subject of debate. Hayreh & Perkins (1969) demonstrated experimentally deminished filling of the peripapillary choroidal vessels in acutely elevated i. 0. pressure a result that might point towards the possibility of different functional zones. The present investigation was carried out in order to study the optic disc and peripapillary blood supply in chronic simple glaucoma and correlate the changes with visual field defects.