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. Author manuscript; available in PMC: 2017 Jan 1.

Published in final edited form as: Prog Retin Eye Res. 2016 Jan;50:108–144. doi: 10.1016/j.preteyeres.2015.10.001

Fig. 33 — (A) Rate of inflation of the balloon and CSF pressure, in a monkey before and after optic nerve sheath fenestration. (Reproduced from Hayreh SS. 1965a)

(B) Fundus photographs of both eyes of a rhesus monkey 79 days after insertions of the balloon. The optic nerve sheath was cut opened on the left side 25 days after insertions of the balloon (A). It shows optic disc edema of the right optic disc and normal optic disc on the left side. (Reproduced from Hayreh SS. 1965a)

Fig. 33 — (A) Rate of inflation of the balloon and CSF pressure, in a monkey before and after optic nerve sheath fenestration. (Reproduced from Hayreh SS. 1965a)

(B) Fundus photographs of both eyes of a rhesus monkey 79 days after insertions of the balloon. The optic nerve sheath was cut opened on the left side 25 days after insertions of the balloon (A). It shows optic disc edema of the right optic disc and normal optic disc on the left side. (Reproduced from Hayreh SS. 1965a)