Scar tissue on the ear drum is usually caused by repeated ear infections. The scar tissue can lead to difficulty hearing and eventually ruptured ear drums. Surgery is one means of avoiding progressive hearing loss or ear drum rupture. No patients have reported taking Scar tissue removal (eardrum).
USCIS normally responds to RFE's within 60 days, however they do not have processing times on how long it takes them to respond. It can be longer than that. I would call the USCIS number: 1 (800) 375-5283 and submit a service request, if you do not hear from them soon.
How long should a person wait for an interview call after applying to a post? I am not applying to other companies because I am happy where I am. Recently, however, I saw an even better opportunity and applied to that job. It's in a different technology so I take time out of my weekends to prepare for the interview.