Aspherical spectacle lens
Aspherical spectacle lens
Aspherical spectacle lens
Aspherical spectacle lens with geometric center spaced from...
Aspherical spectacle lens with prismatic power to correct...
Assembled eye-glasses
Assembled structure of a nose mat matched to a nose supporter
Assembling structure for assembling a fit-on spectacle frame wit
Assembly for attaching sunglasses to a cap
Assembly forming a pair of spectacles especially for an...
Assembly including mutually cooperating and interfitting...
Assembly of clip-on attachment spectacles
Assembly of primary and auxiliary eyeglasses which are...
Assembly structure of rimless eyeglasses
Assymetrical progressive lens
Astigmatic axis independent spatial frequency and contrast...
Astigmatic axis independent spatial frequency and contrast...
Astigmatic axis independent spatial frequency and contrast...
Astigmatic ruler and method of use thereof
Astigmatic self-refractor and method of use