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Images of the retinal nerve fiber layer (RNFL) obtained with AOSLO (adaptive optics scanning laser ophthalmoscopy). (a) Healthy RNFL; (b) RNFL in moderate glaucoma; note areas of missing (marked by arrows) and indistinguishable RNFL bundles; (c) RNFL in severe glaucoma; note complete loss of RNFL bundles
