Last week I found a neighborhood stray cat (he often comes in my yard) is having an eye infection. His right eye appears to be half closed and abnormal with white eye discharge. His left eye looks fine.
I am willing to take him to the vet if I can, but it's difficult because he is not so friendly to human and not approachable. Actually I've been trying to tame and touch him for a year without any success.
I've been observing him for these few days hoping it will be cured naturally, while I think I should do something reasonable. What are the possible options? I have some my antibiotics leftover (still in good condition); is it good idea to let him take small amount of it with some food?