Optical instrument for aiding eyesight
Optical lens structure and control system for maintaining a sele
Optical plastic and glass lens assembly for use in an eyewear fr
Optical prescription insert carrier
Optical toy device and method of manufacturing thereof
Pair of sunglasses with farsighted lenses
Parallel test method
Partially occluded contact lens for treating visual and/or brain
Passive and active photonic crystal structures and devices
Photobiologic sunglasses and transmitters
Photoelectronic diode spatial light modulator and eye protection
Pilot's visor
Pivotable sunshade clip for spectacles
Pivotable sunshade clip for spectacles
Pivotable sunshade clip for spectacles
Pivotal mechanism for suspending a lens to a spectacle
Pivotally openable type spectacles and sunshade-clip assembly
Pivotally openable type spectacles and sunshade-clip assembly
Pivoting optical accessory for use with spectacles
Plastic sunglasses with secondary optical glasses