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我们对两所小学1263名学生的视力进行了普查，发现与学生写字姿势有一定的关系。被调查的学生中有视力低下者483人，占总人数的38．2％。而同一个人左眼视力低于右眼视力的人数达234人，占总人数的18．5％（包括视力5．0以上者）。为了分析左眼视力低于右眼的原因，我们对这些?
We conducted a census of 1263 students in two primary schools and found that they had a certain relationship with the students’ writing posture. Among the surveyed students, 483 were visually-impaired, accounting for 38.2% of the total. And the same person left eye vision is lower than the right eye vision of the number of 234 people, accounting for 18.5% of the total number (including visual acuity of 5.0 or more). In order to analyze the reason why the visual acuity of the left eye is lower than that of the right eye, what are we to these?