The goal of this observational study is to measure the effect of hyperbaric oxygen therapy on middle ear pressure in order to predict the risk factors for middle ear barotrauma also, to assess its effects on hearing functions of the inner ear in participant population. The main questions aim to answer are: * Is there a change in middle ear pressure before and after exposure to hyperbaric oxygen therapy ? * Is there a change in hearing threshold level before and after exposure to hyperbaric oxygen therapy ? The middle ear pressure, eustachian tube functions and the hearing threshold of the participants will be assessed immediately before the fist session and within one hour after the first and tenth sessions.
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Measuring the changes of the middle ear pressure after exposure to hyperbaric oxygen therapy
Timeframe: Immediately before exposure to the first session of hyperbaric oxygen therapy and within one hour after exposure to the first and tenth session of hyperbaric oxygen therapy.