Sensory Testing

Basic sensory abilities are evaluated via pure-tone audiometry and visual acuity tests.

Audiometric thresholds are tested for ten frequencies (125, 250, 500, 750, 1000, 2000, 3000, 4000, 6000, and 8000 Hz) for the left and right ears.

Visual acuity is measured using Vistec's Optovist according to the DIN 58220-3 standard “Visual acuity testing - Part 3: Test for use in expertise” for far vision with the right and left eye separately (monocular) and with both eyes together (binocular), and if available with correction for distance (glasses for far vision). The “inclined optometer” is used to determine the zones of sufficient binocular vision at horizontal gaze inclination. For this, the near and far points are obtained, if available with distance correction (glasses for far vision). Moreover, the participants complete a questionnaire regarding the glasses they wear, and the visual and musculoskeletal complaints during the use of computer monitors at the workplace.