Screening of hearing test for traffic police men is carried out in Apollo Hospital on the International Deaf Day during the month of Sep 2010. Traffic police are at the risk of highest grade of sound pollution. 52 traffic police men varying 6 months to 8-10 years of experience were screened for hearing loss. 63.5% of traffic police men found to be suffering by irreversible hearing loss (Sensorineural hearing loss) in the high frequency due to the exposure of high decibel level of sound pollution. Up to 30% of affected traffic police men were having average of 4 years of experience which is conclusive of the risk of hearing loss which is directly proportional to the duration of exposure.
A free medical camp on auto drivers was conducted under the auspicious of SAHI & Sri Satya Sai Seva Trust on 11.11.09 and also on 22.08.10. The aim of these camps was to evaluate hearing problems of auto drivers who are at higher risk of sound pollution. The average time they are exposed to noise pollution vary from 4 to 10 hours per day.
From the above chart it is clearly evident that incidence of sensorineural deafness is increasing with amount of exposure i.e. years of auto driving. Since sensorineural deafness is a permanent disability without a cure, prevention should be high lighted. With more awareness about sound pollution the incidence of this problem can be checked.