How do anole fused lower eyelids differ from chameleon eyelids?

Anoles have a clear spectacle covering the eye, chameleons have eyelids that completely cover it

A key morphological difference used to distinguish anoles from chameleons lies in their ocular structures. Anoles exhibit fused lower eyelids, a feature that results in a clear, protective covering over the eye, often referred to as a spectacle, similar to what is observed in snakes. Crucially, despite this fusion on the bottom, anoles still possess an independent upper eyelid. In contrast, chameleons have eyelids that fully enclose and cover the entirety of the eye globe. This difference also dictates visual capability, as chameleons have the remarkable ability to move their eyes completely independently of one another, a feat not possible with the anole's structure.