So earlier today I was giving Smaug a betadine soak to treat a possible mite. As I was washing him, a small drop of the betadine-water solution got into his eye. There wasn't much betadine in the water, it was the color of light, weak tea. After that happened I changed the water to regular water and let him soak a bit in that to get all the betadine off of him and his eye (I very carefully put water around his eye on his eyelid using a Q-tip). It has been a few hours and his eye isn't swollen or discharging anything, he is just keeping it closed. Should I be very concerned even though it was a very small drop? What should I do if he continues to keep it closed tomorrow (I can't do anything right now since he is asleep for the night)?
His eye is just probably irritated. Try flushing out his eye with some saline solution I wouldn't worry too much, he probably just needs the eye flushed out