Lets back track a bit...
Are you using a cfl type coil bulb for UV? This looks like a tortoise with burned eyes to me.
What are your four temperatures? Warm side, cool side, basking area, and overnight low? What equipment are you using to achieve these temps?
Maybe we can look at this from the perspective of "How did we get here?" It is just not common for older sulcatas like this to get sick.
Has he ever lived with other species? Was he ever living as one half of a pair?
If he is not sand impacted now, he soon will be. I would strongly suggest a different substrate.
Are you using a cfl type coil bulb for UV? This looks like a tortoise with burned eyes to me.
What are your four temperatures? Warm side, cool side, basking area, and overnight low? What equipment are you using to achieve these temps?
Maybe we can look at this from the perspective of "How did we get here?" It is just not common for older sulcatas like this to get sick.
Has he ever lived with other species? Was he ever living as one half of a pair?
If he is not sand impacted now, he soon will be. I would strongly suggest a different substrate.

