Eyeglasses with rotationally secured circular lenses, lens jig and method of jig use

摘要

Eyeglasses with rotationally secured circular lenses, lens rigs, and methods of use are provided herein. A pair of eyeglasses may include a circular first lens and a circular second lens, each having a lens peripheral surface. At least one of said first lens and said second lens has a line of astigmatism with a prescribed rotational position relative to a wearer eye. The glasses also have a frame having a circular first frame opening into which the first lens is mounted and a circular second frame opening into which the second lens is mounted, each frame opening having an inward frame opening peripheral surface. A lens rotational securing means for securing each of the lenses against rotation relative to said frame, such that the line of astigmatism is prevented from moving out of its prescribed rotational position within its frame opening.

主权项

1. A lens jig for producing a notch in an eyeglass lens having a line of astigmatism, comprising:
a jig body having a lens receiving jig opening sized to receive a lens; rotational degree indicia on said jig body for alignment with a lens line of astigmatism such that a lens having a line of astigmatism and a lens peripheral surface can be inserted into said jig opening and rotated until the line of astigmatism is precisely positioned relative to degree indicia on the jig, consistent with the lens prescription; and a drill port extending through said jig body to said jig opening and sized to receive a drill bit to bore a notch into the lens peripheral surface.