A few months ago (may-june) my cockatiel hit his head somewhere, after which we found that there was some bleeding above his eyes. It stopped a few minutes later but I noticed that there was another layer under his eyelids that were opening and closing. We applied an ointment called megamast lc 5 mg for about 2 weeks and stopped afterwards. Ever since then, his left eye would always look droopy. It looks like his upper eyelid as well as the lower eyelid have been pulled down because i can see the area that comes under the lower eyelid. He seems fine otherwise. His droppings and eating habits are perfectly fine, he preens often and flies around with no problem. He is very playful and clingy, and even noisy sometimes.
Do you think i should take him to the vet or could it be that his eyes wont change even with medicine?