The authors report on the results obtained in the crystallization of t
he aqueous humor in 6 patients suffering from cataract with pseudoexfo
liation syndrome. The principle characteristics of the aqueous in thes
e cases are described and are compared with the features of aqueous hu
mor in 20 cases of uncomplicated cataract. Tetragonal shaped masses of
material with a distinct tendency to localization in the intersection
s of fern patterns were demonstrated in the crystallized aqueous from
patients with pseudoexfoliation syndrome. These aggregates most probab
ly correspond to exfoliation material.