Eyewear lens for frameless eyewear

A frameless eyewear lens, comprising:

• a lens body having a front surface and a back surface;
• and
• a stiffening member disposed on an upper portion of the lens body and extending along the upper portion of the lens body,
• wherein the stiffening member is an integral part of the lens body, and
• wherein a moment of inertia of the eyewear lens with the stiffening member as measured about a vertical axis through a center of a rotated geometry of the lens is at least 2,200 mm4 greater than the same moment of inertia of an identical frameless eyewear lens without the stiffening member.

A frameless eyewear lens, comprising:

• a lens body having a front surface and a back surface;
• and
• a stiffening member disposed on an upper portion of the lens body and extending along the upper portion of the lens body,
• wherein a thickness of the stiffening member is between 90% and 110% of a lens thickness at a midpoint of the lens, and
• wherein a portion of the stiffening member has an extension distance measured from the back surface of at least twice that of the lens thickness.