Examlex
The approximate standard error of the point estimate of the population total is:
Pelli-Robson Chart
A tool used in vision testing to assess contrast sensitivity using letters of varying contrast levels.
Audiometer
An electronic device that measures hearing acuity by producing sounds in specific frequencies and intensities.
Frequency
The number of complete fluctuations of energy per second in the form of waves.
Tinnitus
A condition characterized by the perception of noise or ringing in the ears when no external sound is present.
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