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AIM: To examine and investigate the contrast
visual acuity and
eyes care
habits in
Air Force
pilot cadets, and analyze the change of contrast
visual acuity and the related influencing factors.<p>
METHODS: The contrast
visual acuity of the
students in Grade One and Grade Two at an
aviation university was recorded and analyzed, and the visual
habits were recorded and analyzed by
questionnaire .<p>
RESULTS: A total of 117
students in Grade One and 210
students in Grade Two were enrolled. The contrast
visual acuity of both
eyes over 1.0 were 83
students (70.9%)in Grade One and 174
students (82.9%)in Grade Two respectively(<i>P</i><0.05).
Questionnaire survey on the
eye care
habits by
students , showing the second grade
students of daily
reading time , outdoor
sports ,
sports category, use at night
time , with a focus on
electronic product
knowledge and the degree of
attention and when flying cadets were significantly different(<i>P</i><0.05). There were 87.2%
students of Grade One and 93.3%
students of Grade Two taking less than or equal to 6h to get daily
reading and
learning time , 34.2%
students of Grade One and 13.8%
students of Grade Two taking outdoor
sports less than or equal to 2h, 57.3%
students of Grade One and 90.0%
students of Grade Two taking more than One category of
exercise ,38.5%
students of Grade One and 43.3%
students of Grade Two using
electronic production less than or equal to 2h, 85.5%
students of Grade One and 75.7%
students of Grade Two using
electronic production at night, and 61.5%
students of Grade One and 81.0%
students of Grade Two paying high
attention to the use of scientific
knowledge (<i>P</i><0.05). <p>
CONCLUSION: The contrast
visual acuity of
Air Force
pilot cadets keeps improving at
theoretical study stage, mainly including the following reasons such as the decreasing of
reading time , the increasing of outdoor
sports , the improving of
exercise methods , the reduce using of
electronic production and the enhancing of
eyes -using
knowledge .