Intraocular hemorrhage causes retinal vascular dysfunction via plasma kallikrein.

Liu J, Clermont AC, Gao BB, Feener EP.
Invest Ophthalmol Vis Sci. 2013;54:1086-1094.
PMID:23299478

Plasma kallikrein mediates angiotensin AT1 receptor stimulated retinal vascular permeability.

Phipps JA, Clermont AC, Sinha S, Chilcote TJ, Bursell S-E, and Feener EP.
Hypertension 2009; 53:175-81.
PMID:19124682