Also, sometimes rabbits get blocked tearducts, some people think it happens to boys more than girls do to hormonal changes- it eventually can lead to eye infections. First I would just try washing it out with a strong solution of black tea. If that doesn't work I would try a teaspoon of raw honey or manuka honey- mixed with two table spoons of black tea and drip it into the eyes with by squeezing a cotton ball (this has worked for me). Honey has antibacterial properties. (There are also lots of other recipes for eyewashes for conjunctivitis on the internet using honey, for people, that you can look up). As an alternative you can try antibacterial eyedrops from the pharmacy called Brolene over the counter. If it doesn't clear up or gets worse you need to go to the vet or cull it.