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.
Most people who have responded to an RFE can, however, expect further action by USCIS within about 60 days. If you donât receive a response or update within 94 days since USCIS originally sent you the RFE, it's a good idea to call the National Customer Service Center at 1-800-375-5283. Hiring an attorney is another option, in case your petition is bogged down for complicated legal reasons.