What type of lens mounting does not utilize eyewires or nylon cords?

Rimless mounting is characterized by its lack of eyewires or nylon cords to hold the lenses in place. In this type of mounting, the lenses are typically attached directly to the bridge and temples using specialized hardware or screws. This design allows for a more minimalistic, streamlined look, emphasizing the lenses themselves rather than the frame.

In contrast, full-rim mounting fully encases the lenses in a complete frame, which incorporates eyewires to hold the lenses securely. Semi-rimless mounting also includes eyewires for the top part of the frame while leaving the lower part open, still relying on cords or similar mechanisms to support the lenses. Traditional mounting generally refers to the classic style of eyewear frames that use a combination of these features, again depending on eyewires or other supports.

Understanding these distinctions helps to recognize the unique structural properties of rimless eyeglass frames and their aesthetic appeal, which is quite different from the other mounting types.