I Have A Rabbit Was Scratched By A Cat She

I have a rabbit was scratched by a cat she started having white discharge and finally she wouldn't open her eye anymore inside I took her to the vet.and he put her on eye drops ofloxacing and after the second week the eye turned complete white with red around it
I went back again they told me to continue with those drops nothing works
Today I took her again to the vet and he prescribed oral antibiotic enrofloxacin and he change the drops to tobramycin I'm very concerned about my rabbit eye please give advise I heard that antibiotic on bunnies are not recommended thanks