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.
RTI response time - RTI refusal - Procedure of RTI appeal in India . . . The time limit for getting a response to your RTI inquiry, from the concerned Public Information Officer (PIO) is generally 30 days, from the date your application is submitted. In a case where the application is submitted to the Assistant PIO, five additional days are allowed.