Evaluation of three stereovision tests in the medical exam of pilot recruitment

Abstract

Objective To evaluate the practicability of three stereovision tests in the stereoacuity examination for Navy aviator recruiting.Methods The stereoacuity was measured both for the group of normal position of eye (242 subjects) and strabismus group (32 subjects) by Titmus,TNO test for stereoscopic vision (TNO) and Yan's Digital Stereovision tests.Results The percentage of normal stereovision (stereoacuity≤60″) in normal group was respectively 98.34% by Titmus, 92.98% by TNO and 97.52% by Yan's.There was no significant difference between the measurements of Titmus and Yan's test but the significance was found in TNO test compared with other teszs (Z=- 3.272、- 3.314, P＜ 0.05).In strabismus group, the percentage of normal stereovision was respectively 90.63% by Titmus, 71.88% by TNO and 75.00% by Yan's.Testing by TNO or Yan's had no statistic difference but for the testing by Titmus (Z= -2.825、-2.428, P＜0.05).Conclusions The Yan's Digital Stereovision test combined with Titmus test could be appropriate to stereoacuity examination for pilot recruitment. Key words: Depth perception ; Physical examination ; Personnel selection ; Diagnostic techniques,ophthalmological ;