Rest easy and get better. Don't get on the Deere until your vision is restored. Let someone else mow... you can be in charge of maintenance.
Let's face it, a ~1,000 pound machine with spinning steel blades is not a place for people who can't see. Better to wait until you're safe, than get out there too early and incur an injury that would keep you out of the seat permanently.
Sorry to hear about your injury. Godspeed on your recovery.
:ditto:
Several years back my Dad was diagnosed with a brain tumor. Prognosis negative, 12-15 months. After the surgery he had vision problems, but really could not let go of his driving and since nobody took his license.
Ma let him drive a bit one day and he did OK for a while, but when he almost took out a stop sign that was the end of his driving.
Since you have a recoverable condition I would advise that you wait maybe even a bit beyond what you may think is necessary, and then work up to it. Just drive the rider around with the deck off until you regain all faculties. I would guess that the first outings may prove to be quite a drain so take it slow and easy.