(1)光线要充足。光线要充足舒适,光线太弱就会导致越看越近。(2)要避免反光。书桌边应有灯光装置,减少反光对眼睛的伤害。(3)保持书距。书与眼睛之间的距离应以30厘米为宜,并且桌椅的高度也应与身高相匹配。 (1) light enough. Light should be adequate and comfortable, light is too weak will lead to more and more close. (2) to avoid reflective. Light desks should be provided at the desk to reduce eye damage caused by reflections. (3) keep the book distance. The distance between the book and the eyes should be 30 cm is appropriate, and the height of the tables and chairs should be matched with the height.