Albugo, pen. prod. huius albúginis, f. gen. Plin. A white spotte in the eye.
Lewis and Short: Latin dictionary
albūgo, ĭnis, f. [albus] (perh. only in Pliny). I.A white spot, a disease of the eye; film, albugo, Plin. 32, 7, 24, 70: oculorum albugines, id. 24, 5, 11, 19: pupillarum, id. 29, 6, 38, 117: habere in oculo, Vulg. Lev. 21, 20.—II. In the plur., scurf upon the head, Plin. 26, 15, 90, 160.