Aiming and compositional means for head--worn camera

Alternating optical system: mixing and matching optics to...

Amplifying hearing aid

Amplifying system

An actuation mechanism for variable focal length eyeglasses

An apparatus for disinfecting contact lenses

An apparatus for fastening a constructional element to a...

An assembling structure for assembling a fit-on spectacle...

An asynchronous method for obtaining spectacle features to...

An extended depth of focus (edof) lens to increase...

An improved device and method for manufacturing an...

An inclination joint for a spectacle side

An ophthalmic lens

An optical apparatus and method

Annular mask contact lenses

Annular mask lens having diffraction-reducing edges

Anti-glare eyeglasses

Anti-glare glasses

Anti-relfection spectacle lens and its production method

Antimicrobial contact lens