AIM: To explore the major factors causing adolescent eyesight decline, so as to take effective prevention or timely intervention.

METHODS: The myopic teenagers(n=2 050)were followed up for 6 consecutive years. The common causes of myopia were compared and the statistics were processed using logistic regression analysis, then the factors more obvious in inducing myopia were selected.

RESULTS: In many factors causing adolescent myopia, operating coefficient of excessive homework and scintillating light source were respectively 1.132 and 1.254. Risk of the two factors were 3.590 and 3.681. Result of the stepwise regression model was(OR=2.054)for excessive homework and(OR=2.036)for scintilating light source.

CONCLUSION: The excessive homework and persistent flickering light source are the main influence factors causing adolescent myopia.