Can you have someone hold the eye open so you can photograph it?
What dosage of Tylan did you give her?
It may be that she has an injury or something else going on instead of infection if you have already treated with Tylan for 5days and now with AgriCillin for 2days and the eye is not better.
If you have a vet that can see her, that's always best.
Even though she seems to be eating/drinking o.k., you may want to monitor her weight just to make sure she is not losing. Sometimes birds will pretend to eat when they are not feeling well. Adjusting her bowl or taking her aside to help her eat may be needed as well.
General eye care would be to flush the eye with saline - look inside it the best you can for any obstruction/dirt or debris. If she is scratching at her eye, then you may want to apply an ophthalmic ointment like Terramycin or use Vetericyn eye gel to help soothe it.