Pseudoexfoliation glaucoma is a type of secondary glaucoma caused by the buildup of fibrillar protein deposits in the eye. It is the most common cause of secondary glaucoma worldwide and can lead to rapid progression of optic nerve damage. Risk factors include being over 50 years old, female gender, and living in northern latitudes. Signs include white flake deposits on the iris and lens that obstruct aqueous outflow, raising intraocular pressure and risk of vision loss from glaucoma if not treated.