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Abstract #6709 Published in IGR 4-1
Glaucomatous optic nerve head changes with scanning laser ophthalmoscopy
Marengo J; Ucha RA; Martinez Cartier M; Sampaolesi JRInternational Ophthalmology 2001; 23: 413-423
PURPOSE: To determine whether there are angiographic differences among normal, preperimetric, and advanced glaucoma eyes using indocyanine green angiography with SLO. This method was chosen because of its sensibility for detecting peripapillary capillary vessels. METHODS: Scanning laser ophthalmoscopy was preformed on normal eyes, preperimetric glaucomas and advanced glaucomas. MATERIAL: The authors used a confocal SLO (Heidelberg Retina Angiograph-HRA). CONCLUSIONS: Several changes may be seen on peripapillary capillary vessels at the different glaucomatous stages. DISCUSSION: In normal subjects, HRT shows preservation of the disc/cup area ratio; indocyanine green angiography shows a normal prepapillary plexus pattern on the neuroretinal rim and cup. Subjects at the glaucomatous preperimetric stage reveal a decrease in the disc/cup area ratio as a result of an increase in the cup area secondary to a reduction of the neuroretinal rim area. ICG at this hypertensive stage shows an increase in prepapillary plexus visualization, which may be a consequence of increased blood flow while autoregulation is still operative. Subjects with advanced glaucoma show a prominent decrease in the disc/cup area ratio, as well as a marked capillary drop in ICG angiography.
Dr. J. Marengo, Instituto de la Vision, Buenos Aires, Argentina
Classification:
6.11 Bloodflow measurements (Part of: 6 Clinical examination methods)
