Abstract: A non-fogging eyewear assembly includes an outer lens assembly with an optionally heated outer transparent lens having inner and outer faces, an eyewear chassis configured to be worn by a user, and an inner lens assembly integrated within the eyewear chassis, with the inner lens assembly including an optionally heated inner transparent lens having inner and outer faces. A seal is affixed along a periphery of the outer face of the inner transparent lens assembly, and so that structure for releasably coupling the outer lens assembly to the inner lens assembly causes the outer lens to compress against and be spaced apart from the inner lens by the seal to form a gap therebetween and prevent moisture from entering the airspace that exists between the inner and outer lenses. The outer lens assembly is thus releasably decouplable from the inner lens assembly so that it can be easily replaced if damaged.