I would replace any and every part of my body given that it was a meaningful upgrade. wouldn't change out my eyes for current tech, but if I could zoom in hell yeah I'd do it in a heartbeat
Imagine not only being able to zoom in, but also to see better at night. Be able to see stars and various nebulae without the use of a telescope. Also being able to see at different light wavelenghts. It would be amazing.
Add heat vision and other features while we're at it as well.