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Histologic section through the ONH of (a) emmetropic and (b) highly myopic glaucomatous eyes (stained by the periodic acid-Schiff method). Long thin arrows: thickness of the peripapillary scleral flange; dotted arrows: pia mater; short thick arrows: dura mater. Note the significant elongation and thinning of the peripapillary sclera in the highly myopic eye (reproduced from Jonas et al., 2011).
