Consider someone who wears a Contact Lens that is -10.00 diopters in power (very powerful) for distance correction, but needs +2.00 diopters ADD reading glasses "over-the-top" of the contacts to be able to work on the computer all day long:
Could the same optical correction be achieved by just using -8.00 contact lens for working on the computer up close, and using a pair of -2.00 **diopter eyeglasses over-the-top for distance vision?
This isn't a medical question. This is a question of optics (with a real-world example) and if the above scenario would given an optically equivalent result. It seems obvious to me that it would, but I'm not expert in physics or optics.
==EDIT== **In the second instance marked above, I at first wrote "+2.00 diopters" but I actually intended to write "-2.00 diopters" making the total power of contact lens plus glasses about -10.00 diopters.