Sure I have dealt with ear abbesses and infections many times.
Is the side of the head bulging out?
Sometimes you have to slit the tympanic membrane so you can remove debris from the cannel. Sometimes you have to completely remove the midbrain (Don’t worry it grows back)
Typical treatment is with Baytril 5mg/kg and a 20% solution in each nostril.
Seek a competent vet.

Hope this helps.

Sam Pascucci
www.FloridaIguana.com