Otology is a division of medicine which studies normal and pathological anatomy and physiology of the ear as well as their diseases, diagnosis and treatment. Otologic surgery usually alludes to medical procedure of the center ear and mastoid connected to chronic otitis media, for example, tympanoplasty, or ear drum medical procedure, ossiculoplasty, or medical procedure of the hearing bones, and mastoidectomy. Otology likewise contains careful treatment of conductive hearing misfortune, for example, stapedectomy surgery for otosclerosis. Neurotology, an interrelated field of prescription and subspecialty of Otolaryngology, is the study of diseases of the internal ear, which can prompting hearing and balance disorders. Neurotologic surgery generally alludes to surgery of the inside ear or medical procedure that implicates entering the inner ear with risk to the hearing and balance organs, including labyrinthectomy, cochlear embed medical procedure, and surgery for lumps of the temporal bone, for example, intracanlicular acoustic neuromas.