Abstract: Eyeglass frame structure comprising a lens receiving or bow portion having a pair of oppositely disposed temple or earpiece members hingedly secured at the opposite ends thereof, said lens receiving portion being provided with a transversely separable nose bridge element for facilitating installing of a lens member in the eyeglass frame, each of said earpiece members being of an adjustable length, and each earpiece member hingedly secured to the lens receiving portion for adjustment of the planar orientation of the lens receiving portion with respect to the earpiece axis in both lateral and transverse directions.