Yikes! Ulcers in both eyes?
Lady has dry eye and is prone to ulcers. Did they check his tear production to make sure that isn't the cause of his ulcers? Both eyes is unusual.
In most cases they clear up quickly. The vet probably gave you an antibiotic drop or ointment. Atropine is often also prescribed to help with the spasms and pain.
Did the vet tell you to keep an Elizabethan collar on him so he can't rub at his eyes?
Corneal Ulcers In Dogs and Cats And Their Treatment In ThePetCenter.com.