Rimless glasses should only be worn by people with very low powers of prescription, preferably myopic (or nearsighted) patients. This is because of the actual physics involved in lens fabrication. A farsighted (or hyperopic) person wears a lens that is convex in shape so it is thickest in the middle and thinnest on the edge creating magnification. Because the rimless frame requires us to cut a groove all the way around the edge, it will be necessary to surface a thicker lens than normal, resulting in a less attractive heavier pair of glasses!