OTOACOUSTIC EMISSIONS IN TYPE 2 DIABETES: A SYSTEMATIC REVIEW

Abstract

Outer row of hair cells in the organ of Corti are not directly involved in deciding the threshold of the acoustic stimulus, but their damage will increase the hearing threshold and may even cause the deafness. Type 2 diabetes is increasing globally at an alarming rate, which is affecting the normal hearing. In type 2 diabetes poor metabolic control, neuropathy or microangiopathy may affect the normal hearing. This study is focused on self enhancement of the knowledge in the particular field apart from providing the complete review on effect of type 2 diabetes on otoacoustic emissions to the readers. Articles published in English on otoacoustic emissions in type 2 diabetes were collected and reviewed from Pubmed, Google and Google Scholar. Hearing threshold is increased in type 2 diabetic patients and amplitude of otoacoustic emissions was decreased. Hearing loss is observed in type 2 diabetes and it is attributed to damage of outer row of hair cells in organ of Corti.