الفهرس 
Development of diving
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Abstract
This research has been conducted to study the changes and evaluation of the two hearing and balance, before and after diving at various depths.
Have been carried out a comprehensive clinical detection of all divers in all branches of medicine various general maritime hospital in Alexandria. The tests of ear, nose and throat containing the following:
1 - detect virtual ear, nose and throat.
2 - a scan on the sinuses (as an act necessary for those who qualify to work Cgtasin later).
3 - a hearing test-wire antenna and marrow.
4 - a hearing test by computer to ensure their safety.
5 - a measure of the ear pressure and recording the amount of offsets the eardrum.
6 - various measurements of the device equilibrium.
When the statistical analysis of the results of the message found there was no statistically significant differences between the two sets of research and so there is no difference in the two Effect on hearing and balance, with a different depth in the diving.