<prompt> Acoustic neuroma causes:Cochlear deafnessRetrocochlear deafnessConductive deafnessAny of the above  <response>: SNHL can be: a. Cochlear SNHL b. Retrocochlear SNHL Acoustic neuroma cause retrocochlear type of SNHL as it damages Vint nerve. Menieres disease causes cochlear deafness Impoant features of Retro Cochlear hearing loss Acoustic Neuroma: Sensorineural hearing loss more marked in high frequencies. - Poor discrimination score 0-30. - Recruitment phenomenon absent and roll over phenomenon present i.e. discrimination score fuher decreases when loudness is increased beyond a paicular point. - Sho increment sensitivity index SISI test will show a score of 0-20 in 70-90 cases. - Tone decay significant 