Devices for maintaining spectacles in position

Devices, compositions and methods for cleaning optical surfaces

Differential thickness contact lens utilizing multiple base...

Differential thickness contact lens with compensation for...

Diffractive lens exhibiting enhanced optical performance

Diffractive lenses for vision correction

Dimensionally stable eyewear

Directional microphone for head mounted midget hearing aids

Disposable/reusable sun filter

Diving mask with lenses and method of fabricating the same

Double biased eyeglass nosepiece

Double toroid flexible lens eyewear for cyclists

Dual mount adapter

Dual rate spring-action eyewear temple

Dual temple system for eyewear

Dual-purpose nose pad insert assembly

Durable eyeglasses frame assembly

Dynamically stabilized contact lenses

Dynamically stabilized contact lenses