I have a six year old Boston terrier. He contracted kennel cough last week but has since recovered. However, his eyes became very red during the infection and his left eye has become swollen and extremely red. I took him to our vet and he dilated his eyes with atripine. That was on Sunday today his eye left eye is still dilated. We had him checked for glaucoma and all is well...we are also administering neomycin ointment to the eye. Is the prolonged dialation a concern?