1. A method for screening for a state of ophthalmic fatigue of an individual, comprising steps: a1) of positioning a target relative to the individual in such a way that the target is visible by at least one of the two eyes of the individual; a2) of appraisal by the individual of the clearness of the target; and a3) of deducing a state of ophthalmic fatigue of the individual depending on whether the target is seen clearly or hazily by the individual, said method for screening comprising, prior to step a2), a step a0) of adjusting the size of the target or the position of the target relative to the individual, depending on the age of the individual.