Anti-fog, interchangeable-lens goggle adapted for use with a battery comprising: a body with a flexible posterior portion for engaging a user's face and an anterior portion; a lens having a resistive anti-fog element thereon, the lens adapted for engaging the anterior portion of the body; an engagement mechanism for releasably interconnecting the lens and the body; an interconnection mechanism preferably protected by a tortuous path electrical interconnection system and depending from the body adapted for detachably interconnecting the heating element of the lens and the battery, the interconnection means operable or integral with the engagement mechanism such that interconnecting the heating element of the lens with the battery also reinforces interconnecting of the lens with the semi-rigid anterior portion of the body; and a strap adapted for holding the goggle on one of a user's head and helmet.

Eyewear is disclosed that can have multiple ventilation states providing different amounts of ventilation through the eyewear. The eyewear can include a lens and a frame. In some embodiments, the lens can be movable with respect to the frame to provide the multiple ventilation states. In some embodiments, the eyewear can include a gasket that removably attaches to the frame. In some embodiments, the gasket can be movable with respect to the frame to provide the multiple ventilation states.

Eyewear is disclosed that can have multiple ventilation states providing different amounts of ventilation through the eyewear. The eyewear can include a lens and a frame. In some embodiments, the lens can be movable with respect to the frame to provide the multiple ventilation states. In some embodiments, the eyewear can include a gasket that removably attaches to the frame. In some embodiments, the gasket can be movable with respect to the frame to provide the multiple ventilation states.

Provided is a selectively filtered vision protection system for defense against aircraft laser threats. The system comprises a viewing device having a frame supporting a transparent viewing surface. The frame is configured to be positioned on the face of a user such that the user may see through the viewing surface. A selective filter is positioned adjacent to the viewing surface such that the angle of the field of view of the user is regulated in at least one orthogonal plane. The viewing angle is selected to prevent light transmitted from a light source, located outside of the viewing angle, from being viewed by the user. The selective filter is configured to operate in a first mode for transmitting light unrestricted through the viewing surface, and a second mode to regulate the angle of the field of view of the user in at least one orthogonal plane.

Provided is a selectively filtered vision protection system for defense against aircraft laser threats. The system comprises a viewing device having a frame supporting a transparent viewing surface. The frame is configured to be positioned on the face of a user such that the user may see through the viewing surface. A selective filter is positioned adjacent to the viewing surface such that the angle of the field of view of the user is regulated in at least one orthogonal plane. The viewing angle is selected to prevent light transmitted from a light source, located outside of the viewing angle, from being viewed by the user. The selective filter is configured to operate in a first mode for transmitting light unrestricted through the viewing surface, and a second mode to regulate the angle of the field of view of the user in at least one orthogonal plane.

A user-wearable fluorescence based visualization system comprising a multi-light lamp assembly that provides for the selected output of light using multiple light emitting sources, wherein the outputted light may be tailored to generate response wavelength by the interaction of the emitted light and a tissue illuminated by the emitted light, through the process of fluorescence, and a viewing system that allows a practitioner view the fluorescent light generated by the tissue, and distinguish between healthy and diseased tissues.

A user-wearable fluorescence based visualization system comprising a multi-light lamp assembly that provides for the selected output of light using multiple light emitting sources, wherein the outputted light may be tailored to generate response wavelength by the interaction of the emitted light and a tissue illuminated by the emitted light, through the process of fluorescence, and a viewing system that allows a practitioner view the fluorescent light generated by the tissue, and distinguish between healthy and diseased tissues.

An eyeglass frame configured to hold corrective lenses therein is removably engageable with a protective lens. The protective lens has connectors on opposing ends which are engageable with first and second mounts engaged to the frame. A gap is formed between the protective lens and the front surface of the frame and is maintained by the engagement of the connectors with the respective mounts.

An eyeglass frame configured to hold corrective lenses therein is removably engageable with a protective lens. The protective lens has connectors on opposing ends which are engageable with first and second mounts engaged to the frame. A gap is formed between the protective lens and the front surface of the frame and is maintained by the engagement of the connectors with the respective mounts.

A structure of clip-on glasses includes a spectacles frame for holding the glasses; the spectacles frame provides an installation part for fixing the glasses and buckle parts for clipping the spectacles frame to the eyeglasses; the buckle parts include elastic buckles which are set on the upper edge of the spectacles frame; elastic buckles are made of elastic material and their contact surface with the eyeglasses are rubber. Because of using elastic material of the elastic buckles, the glasses can adapt to all kinds of eyeglasses with different designs and well clip on. Due to the rubber surface of the elastic buckle, the eyeglasses can prevent from scratching by the elastic buckle.