My grandmother is 85 years old and I want her to take a visitor visa for the US, but as she is partially having hearing problems and it is difficult for her to face the whole process for an interview, can anyone accompany her with the visa interview? I am currently on a work visa here in USA.
Yes, your grandmother may be accompanied by someone for the interview process; as long as you inform the embassy in advance. From the embassy of the United States in Kuwait's website:
Applicants with physical disabilities: Applicants with a physical disability may bring an escort. Those requiring special accommodation should notify the Embassy of their needs well in advance of the interview date.
Note that even though this is from the Kuwait website, the information is the same for all US consulates abroad, since the website is actually managed by the State Department.