Eyesight improvement after general anaesthetic

I have been home one week since having a laminectomy, spinal on four neck vertebrae C4, C5, C6 and C7 which has been deemed 100% success by the team headed by that brilliant neurosurgeon Nicholas Little. Usually having so much work on all C vertebrae reduces the success rate but here I am an exception to the rule. Anyway since coming out of the general anaesthetic my eyesight has improved to the point that I no longer need my distance prescription glasses I can comfortably use my glasses that I had for computer work and I don't need the glasses at all for close up viewing. Has anybody had a similar reaction to a general anaesthetic?
What an incredible Christmas present!!!!