Abstract: An eyeglass frame includes left and right length adjustable temples; left and right viewing assemblies adjustably mounted in left and right frames respectively; and a length adjustable bridge. Either viewing assembly includes a transversely moveable frame element slidably secured to the left or right frame; a longitudinally moveable frame element slidably secured to the transversely moveable frame element; a front aperture member slidable about the longitudinally moveable frame element and including an upper longitudinal slot and a cut on an inner side; a corresponding rear aperture member slidable about the longitudinally moveable frame element and including a lower longitudinal slot and a cut on an inner side; and a circular member rotatably secured to the longitudinally moveable frame element and including two projections moveably disposed in the slots respectively. An aperture is formed by at least the cuts, whereby rotating the circular member will change size of the aperture.