To Be completely honest with you, I would hold off on the reptaid at least until after the eye infection clears up. I don't remember how I came to the conclusion ( I could go read through the hundreds of posts in Naughticas thread I guess... lol) that despite reptaid being touted as a safe herbal supplement, I still found it to be slightly tough on my dragons systems. That's why I would say focus on one thing at a time first, and that needs to be the eye.
For all we know, the lack of appetite can be due to just the stress of the eye infection. Clearing that up might be all that's needed to bring the appetite back.
If you still feel the need to use the reptaid after the eye clears up, then that's up to you. But, if it were me, I would hold off on the reptaid for now.
Great that you were able to try some eye drops. How did he react to the eye drops?
-Brandon