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. Author manuscript; available in PMC: 2019 Mar 7.
Published in final edited form as: Prog Retin Eye Res. 2017 Dec 8;64:1–55. doi: 10.1016/j.preteyeres.2017.11.003

Fig. 45.

Fig. 45.

Excessive water, potassium, or both may be transported to the vitreous or to the superficial or deep plexus via potassium pumps and aquaporin 4 channels. The spatial buffering of potassium by this mechanism and that shown in Figure is called the potassium siphon.