After he bit me that time, I bought some of these gloves:
https://www.amazon.co.uk/gp/product/...?ie=UTF8&psc=1
They're an absolute godsend. I never handled him, pre-conjunctivitis, unless I absolutely had to, but if I did, I used these gloves and it makes the whole process much safer.
I'm now holding him with only latex medical gloves on, while I do the drop, and nothing bad has happened. <touch wood>
We're fortunate in that my son likes to have the concept of a pet, but prefers not to have to actually do anything with it. In that respect, he and Roc are a perfect match.