Semi Rimless glasses are also called half rim eyeglasses as the frame is only on the top part of the lenses. The lens may be notched to hold the lens in place or a piece of mono-filament nylon line secures them in place around the bottom of the lens in a groove. Other variations of the half-rim eyeglasses version, known as browline glasses, are the frame less bottom part with only the upper portion of the lens were secured by heavy duty hinges attached to a sturdy or flexible temples. Another type secures and hold the lens using magnetized nose bridges and arches making it look virtually frame-less. But all quality features of the rimless version are also the quality features of the Semi-Rimless Eyeglasses. Half-rim glasses features include lens with coatings for polarized, photochromic, 100% ultraviolet rays resistant, fog free and scratch-proofing.