AIM: To study the model to predict distant vision with diopter and to explore the distant vision standard for civil aviator recruitment in China.

METHODS: The data about distant vision and diopter of 1 219 students participating in physical examination of Civil Aviation Flight University of China from 2006 to 2013 were collected. A model of index regression curve with diopter as independent variable and distant vision as dependent variable was established. The predicted value and 95% prediction interval of distant vision to specific diopter were calculated according to the model. The error rate was calculated by formula: error rate= \〖(distant vision predicted value-actual average value)/actual average value\〗×100%.

RESULTS: The curve model with diopter to predict distant vision was: y=0.55e^0.41x +e(R²=0.968). The average error rate of predicted distant vision was 3.64%. With diopter range \〖0.00,-3.00\〗D, the 95% prediction interval of predicted distant vision \〖0.14, 0.55\〗 didn't completely coincide with the current standard(0.3≤distant vision<0.7).

CONCLUSION: The fitting effect of the model is good and can be used to predict reasonable distant vision according to diopter. It is suggested to maintain diopter standard of China's civil aviation recruitment \〖0.00, -3.00\〗D unchanged, and drop the distance vision standard to 0.1.