Eyewear can include lenses having perimeters that are customized for an intended wearer. The perimeter of the lenses can be determined based on anatomical features of the wearer's face, field of vision, or other parameters specific to that individual. A provisional lens perimeter obtained may be modified in curvature and/or size to arrive at a desired final lens perimeter, based for example on stylistic preferences or to accommodate external elements affecting the perimeter and/or curvature of the lens. Customized lenses can be fabricated based on the determined lens perimeters. The customized lenses can be assembled into completed eyewear that is customized for a wearer, for example having shapes, sizes, and designs not otherwise possible.
