I used it recently with Megan for a suspected UTI. (No, correct diagnostics were not done - regular vet out of town, another "working her in" when the schedule was obviously too tight already, no chance to object to what the vet-of-the-moment did.)
Anyhow, the Baytril had no ill effects. Her BG was definitely up from either the UTI or bladder irritation or else a steroid shot (another thing I had no chance to object to), but it came down while she was on the Baytril, so the antibiotic obviously wasn't the culprit.
According to the reading I did, the major thing about Baytril and vision problems is the dosage. If the dosage is OK, the chance of vision problems is small.
The vet gave us pills compounded in a beef flavor. Beef is no problem for her, fortunately. I put the pills in Pill Pockets, and she gobbled them up like treats.