I became a patient at Rochester Mayo in February of 2018 for a different condition that required a 2nd opinion.
I had researched "stabismus surgeons" after I had a failed surgery locally in 2015. When I initially called it was almost a year wait just to be seen. It was truly worth the wait. I had never worn glasses or had eye problems as a child. I started needed readers at 62 yrs. My strabismus was not caused by a stroke, diabetes, myasthenia gravis or thyroid problems. I was diagnosed with esotropia which was probably caused by problems with eye muscles or the way my nerves were not transmitting information to my brain. I remember the term "sagging eye syndrome" was used by my physician also.
But the final comment is..........I see only one image w/o prisms in both lenses! Life is so fine due to the expertise of my eye surgeon at Mayo Clinic!