Heating and heat preserving device for contact lens

High performance selective light wavelength filtering...

High strength ophthalmic lens

High-order aberration correction for optimization of human...

Highly oxygen permeable contact lens materials and...

Hinge between a side piece and an endpiece of glasses

Hinge device, particularly for spectacle frames

Hinge for eyeglasses

Hinge for spectacles

Hinge for spectacles

Hinge for spectacles

Hinge for the elastic articulation of a temple piece to the...

Hinge for the pivoting of an elastically divertible temple...

Hinge means for eye glass frames

Hinge structure of a spectacle frame

Hinge structure, particularly for spectacle frames

Hinge system for eyewear

Hinge to connect the legs and frame of a pair of spectacles

Hinge, particularly for eyeglasses made of plastics

Hingeless eyeglass frame and vented eyeglass