I was reading up about Depth of Focus and wondered if glasses affect depth of focus. If yes, is it noticeable to the user?
Depth of focus is most strongly affected by the pupil size--- when the pupil is very constricted, the depth of focus is large, and when the pupil is dilated, it is narrow. The effect is most obvious in the extreme case of a lensless pinhole camera.
The eyeglasses simply change the location of the focal point for a given tension in the eye's lens, and the effect on depth of focus is negligible, I believe.