Systems, methods, devices, and other techniques for heating a lens to mitigate fogging. The methods can include identifying a temperature of the lens, identifying an ambient temperature of an environment of the lens, determining whether the lens is susceptible to fogging based at least on the temperature of the lens and the ambient temperature of the environment of the lens, and in response to determining that the lens is susceptible to fogging, causing a heating element to apply heat to the lens to mitigate fogging of the lens.

Systems, methods, devices, and other techniques for heating a lens to mitigate fogging. The methods can include identifying a temperature of the lens, identifying an ambient temperature of an environment of the lens, determining whether the lens is susceptible to fogging based at least on the temperature of the lens and the ambient temperature of the environment of the lens, and in response to determining that the lens is susceptible to fogging, causing a heating element to apply heat to the lens to mitigate fogging of the lens.

One or more safety eyewear devices are described. The safety eyewear includes a heating element that transfers heat to lenses, thereby providing defogging in eyewear suitable for a construction environment.

One or more safety eyewear devices are described. The safety eyewear includes a heating element that transfers heat to lenses, thereby providing defogging in eyewear suitable for a construction environment.

A fog shield for a diagnostic ophthalmic lens is disclosed. The shield has a lens mount and an air barrier. The lens mount is configured to connect to a diagnostic ophthalmic lens. The air barrier is connected to the lens mount and extends in front of the lens mount. The air barrier is located below and in front of the diagnostic ophthalmic lens when the lens mount is connected to the diagnostic ophthalmic lens.

A spectacle lens has on at least one surface thereof at least two coatings modified to exhibit an antibacterial effect and/or an antiviral effect. A method of making such a spectacle lens includes dispersing at least one biocidal component in a solvent and/or dissolving at least one biocidal component in a solvent, the dispersed at least one biocidal component and the dissolved at least one biocidal component being different from each other.

Swimming goggles of the present invention include a pair of lenses. Each lens has a window. The window is connected with a ventilated waterproof device that is watertight but not airtight, through which a heat on an inner side of the lens produced by human body in form of fog and water particles permeates toward an outer side of the lens; relatively, fog on the outer side of the lens is soon turned into water drops through condensation, the water drops are too large to undergo reverse permeation into the inner side of the lens; because of the effect of surface tension within the condensed water drops, water molecules pull each other as a stable state and are unable to be separated from the water drops toward the inner side of the lens so that the water leakage of the swimming goggles is eliminated and waterproof function is achieved.

Swimming goggles of the present invention include a pair of lenses. Each lens has a window. The window is connected with a ventilated waterproof device that is watertight but not airtight, through which a heat on an inner side of the lens produced by human body in form of fog and water particles permeates toward an outer side of the lens; relatively, fog on the outer side of the lens is soon turned into water drops through condensation, the water drops are too large to undergo reverse permeation into the inner side of the lens; because of the effect of surface tension within the condensed water drops, water molecules pull each other as a stable state and are unable to be separated from the water drops toward the inner side of the lens so that the water leakage of the swimming goggles is eliminated and waterproof function is achieved.

Eyeglasses include rims, at least one temple member connected to the rims, and at least one lens with a perimeter edge. The perimeter edge of the lens includes an upper perimeter edge, a lateral perimeter edge, a lower perimeter edge, and a medial perimeter edge. The rims are configured to retain the at least one lens with the upper perimeter edge of the lens engaging the rims. A vent arrangement is provided between the lens and the rims. The vent arrangement includes an opening between a lateral side of the rims and the lateral perimeter edge of the lens.

Eyeglasses include rims, at least one temple member connected to the rims, and at least one lens with a perimeter edge. The perimeter edge of the lens includes an upper perimeter edge, a lateral perimeter edge, a lower perimeter edge, and a medial perimeter edge. The rims are configured to retain the at least one lens with the upper perimeter edge of the lens engaging the rims. A vent arrangement is provided between the lens and the rims. The vent arrangement includes an opening between a lateral side of the rims and the lateral perimeter edge of the lens.