Abstract: A clip-on optical element device to be clipped on in front of lenses of a pair of eyeglasses or like and conforming to the pair of eyeglasses. The clip-on optical element device comprises a pair of opposite optical elements, a pair of opposite adjustable, flexible, bendable, and shapeable open rims for receiving the pair of optical elements, and a flexible bridge member detachably connecting the pair of flexible open rims together in a spaced apart relationship. The clip-on optical element device further comprises two pairs of upper and lower clips respectively attached to each of the pair of open rims for securing the clip-on device to the pair of eyeglasses. Each optical element has an annular slot in its peripheral surface and a perimeter which substantially conforms with each of the lenses of the pair of eyeglasses. Each open rim has a protruding ridge in its inner periphery surface for receiving and engaging with the annular slot of the optical element.

Abstract: An inexpensive method and apparatus for modifying the optical characteristics of blank lenses to convert them into regular lens spectacles in order to enable a prospective purchaser of eyeglass frames to fully see himself/herself in the mirror when trying on the frames to be certain as to how they will look when wearing the frames. The present invention relates to an eyeglass frame tester kit which can be used to evaluate a particular frame among others. Correction means are temporarily adhered to the blank lenses of each pair of frames selected. This permits the client to get a more realistic image of how the completed prescription will look because with the corrective ocular means affixed to the blank lenses, the lens functions as a normal lens providing the optical correction required to enable the wearer to see clearly.