Rounded Glasses frame with swappable lenses

These frames are designed to have swappable lenses for use in vision therapy. The lens can be scaled to the desired thickness up to 1mm as a simple cylinder, then a cone can be added to give more thickness up to 4mm.

Designed to be printable without supports, with swappable parts in case any are damaged or lost, and can be worn in either orientation to make it easy to block vision in either eye by flipping the frame over, or switching which side the lens is inserted in.