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To educate their children not in light of children to read to read and write, if dim light can often be parents persuasion, and under strong light reading writing is often ignored by the parents. In fact, the light is harmful to the eyes. Because sunlight contains ultraviolet and infrared, if often in bright light reading, eyes by ultraviolet stimulation, the eye in front of the conjunctiva,and the cornea (black eye) would be damaged, irritation of the eyes, tears, afraid of light, the eyes difficulties etc. Mao glass infrared penetration is stronger than the ultraviolet, eyes by infrared stimulation, within the eye retina will be injured.

So the majority of parents to pay attention to light on children's visual harm, to timely advice not to have children in too strong light to read and write, avoid sunlight in the ultraviolet and infrared light reflected from the books to the eyes and damage a child's eyes. Children reading books should not be used in light of the latest research data show that the fluorescent lamp can easily lead to children's myopia, and incandescent lamp can avoid this problem. A scientific research institutions in Guangdong Province this monographic study found that using fluorescent lighting class, eyesight decline after half a year of students accounted for the total number of 15.12%; and the use of incandescent lighting class, and decreased visual acuity is only 4.6%. Subsequently, two sets of lighting lamps and lanterns reversed after 3 months showed that, instead of incandescent lighting class, vision on the elderly accounted for 1.07%. Why is there a bad influence on students' eyesight? This is because the cold fluorescent fluorescent lamp with gray and blue tones. In this light, pattern of the text books lack of distinctive profile, easily lead to read the eye fatigue, with the passage of time, induce myopia or deepen myopia. Therefore, experts recommend that the school lighting to incandescent lamp as well. For example, a 9 meters long, 6 meters wide classroom can be configured with 60 100 to 6 watt incandescent light bulbs, light bulbs from the table 1.6 to 2 meters.

This can ensure that students in reading, writing, do not feel fatigue, reduce the occurrence and development of myopia. Students study at home, it should be according to the bulb wattage, appropriate adjustments to the lighting and desktop distance, such as 60 watt lighting distance for 80 ~ 100 cm, 40 watt bulb for 50 ~ 60 cm and 25 watt light bulb for 40 ~ 50 cm can be. fluorescent light fixture and lanterns a change, electricity may be more, but for the sake of children's health, the use or to spend a little. At the same time, the scientific research unit is proposed to develop a suitable for the use of children's learning. Reading time is too bright, the children's eyes, some parents think, the child in the light is too dark to read and write will hurt the eyes, so bright lighting will be useful for the child's eyes! This is wrong, because in the light of the direct reading, writing, and will adjust the system and cerebral cortex in the work of the state of tension, and for a long time will appear visual fatigue, so while reading in the strong light and in the dark light effect is the same, are not good for your eyes. Ideal lighting should be this: (1) the desk lamp position children read and write, the desk lamp should be left in front of the desk, so as to avoid the right hand to block the light. (2) the style of the lamp is best not to use the light directly to the children's eyes, and fixed fixed. (3) lamp desk lamp brightness can use 40 watt bulb or 20 W fluorescent lamp, in order to achieve 400 ~ 700 lux illumination.