Thanks for clearing-up the explanation of what the problem actually is...And the fact that it's bilateral, or in both eyes, helps too...
Your bird's eyes look extremely irritation to me, and as already mentioned, since it's happening in both eyes, then it could be any number of things, from an infection in his sinuses, his throat, his ears, or simply in his eyes (as when one eye becomes infected with bacteria/fungi, it usually spreads quickly to the other), to a disease such as Psittacosis, to a congenital problem (although since this just recently started and he wasn't born with this issue, I doubt it's a congenital issue like a tear-duct problem)...The fact that it's an "acute" issue, meaning it just recently started indicates an infection, disease-process, or allergy...
How long has he had this problem? Was it always in both eyes, or did it start in one eye and then spread to the other? Did you change anything in his/your environment or diet right around the time that this started? Did you move? Did you start using any different types of cleaners in your home? Have you started burning any candles, incense, oils, using any room sprays, etc.? Have you changed his diet or brand/type of pellets, seeds, etc.? Any new veggies or fruits around the time this started?
It really does look to me like it's either an allergy, or there is something that is externally irritating his eyes a great deal, and it's obviously bothering him and is probably itchy, if not actually painful. Think long and hard about absolutely ANYTHING that you could have possibly changed in your home, in his diet, in his cage, or around his cage...did you change the location of his cage? Have you gotten any other pets/animals in your home? New perfume/cologne, soap, shampoo, anything at all like this that he either comes in-contact with directly, or indirectly through you or other people in your home...
She's probably scratching because it bothers her.
