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. 2020 Jan 1;9(1):61–65.

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© 2020, Author(s).

This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial 4.0 International License (http://creativecommons.org/licenses/by/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

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A = Cup/disc (C/D) vertical ratio ≥0.5 (black arrow); B= Retinal nerve fibre deficiency (blue arrow) ; C1 and C2 = Asymmetry of vertical C/D ratio >0.2; D= Presence of papillary haemorrhage (green arrow) associated to retinal nerve fibre deficiency (blue arrow); and E= presence of isolated papillary haemorrhage (green arrow).