So cave fish that have lost eyesight isn't reverse evolution? I read about an experiment with them where they implated new corneas in them (some scientists obviously have too much time on their hands) and they expected them to be able to see again. And I would think extinction was a type of reverse evolution.
No. losing eyesight in cave fish is not reverse evolution. What would give you that idea?
caves aren't really that old.
They are a very recent addition (Subtration?) from the landscape.
E would have to work REALLY fast to come up with these eyes!