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 and diabetic macular edema.

Feener EP.
Curr. Diab. Rep. 2010 Aug; 10(4):270-5.
PMID:20535647