Full-rimmed frames can be divided into two types:
Both are glazed with a bevel or v.
Metal Frames: These use screws to secure the lenses in place. The screws
are small and require precise adjustment to ensure the lenses fit properly
and stay secure.
Plastic Frames: These frames don’t use screws. Insteadthe lenses are
inserted into the frame by carefully matching the lens size to the frame,
relying on the frame’s design to hold the lenses in place without any
screws.