What’s wrong with my boyfriends eyes?

Tiara

Hey! I know there’s a lot of nurses and medical students on here so i figured i’d reach out. My boyfriend has frequent extremely swollen, red and itchy eyes, beyond anything i’ve seen with simple allergies. He uses eyedrops, benadryl and some allergy meds a doctor prescribed but nothing seems to work, i think he must have a condition we just don’t know about. Any and all theories or advice welcome thank you so much. Here are some pictures of what they look like