Myopia: The culprit due to light pollution

Improper illumination causes diseases such as red eyes, itchy eyes, watery eyes, blurred vision, headache, increased overall fatigue, decreased eye fineness, and long-term results in reduced vision and nearsightedness .

Dr. Nguyen Van Khai, Director of the Center for Electrochemical Activation Solution & Electricity Saving Lamp, said that students with eye diseases are due to light pollution (where the light is too weak and too strong).The general requirement is that the illuminance must ensure 300 - 500lux . However, many classrooms when measuring less than 100 lux. So, normally, people take artificial light to supplement natural light. In principle, the classroom should only use reflected light of natural light.

According to Dr. Tran Dinh Bac, chief consultant of the School Lighting Project, Institute of Labor Protection Science, most of the lights in the classrooms are not proper. The key device for diffusing light, increased lighting performance, and dazzling restrictions are captures, but up to 87% of the lights in the classrooms are not installed.

75% of classrooms do not use table lights and only 7% of classrooms use compact lamps. The quantitative and light quality indicators at the classrooms are not satisfactory, including schools with funding conditions. This is one of the main causes of increased refractive error in the eye.

Sitting upright and eyes too far away, or too close to you can also cause nearsightedness.

Dr. Nguyen Van Khai said: "The light is not good, but it is not too good. It is standard to use 9W / m2, however, many rooms up to 15W / m ^2. Excess but still make children suffer The nearness of the illumination is too great, it also damages the eyes, and many places with parallel bulbs make the light uneven, the shadow is pressed on the notebook, creating a dark spot ".

In class, teachers are not really paying attention to the sitting position of the child. Sitting not straight, and eyes too far away, or too close, also myopia. Glossy walls, glossy tables, paper that is too white increase the reflectivity, hang many pictures on the wall . also dazzle.

For schools, classrooms arranged 9W / 1m ² , classrooms must always have enough light from 300 - 500 lux. In addition, the slogan or picture should be pushed down to the bottom or side. Above the podium should only be left in the table. Teachers must pay attention to students sitting upright, right eye at about 25 - 30cm.

Dr. Tran Dinh Bac said that improper lighting is the cause of diseases such as red eyes, itchy eyes, watery eyes, blurred vision, headache, increased overall fatigue, decreased eye fineness, long-term lead to reduce vision and nearsightedness.

Half of the world's population is nearsighted

In 2050, it is expected that half of the world's population equivalent to 5 billion people will be nearsighted. This refractive error also becomes the leading cause of blindness.

Forecast of scientists at the University of New South Wales Eye Institute (Australia) is published in Ophtalmology, 20 Minutes. The research team explained the rapid increase in myopia, which is closely related to environmental factors, mainly because we are too few out. In particular, the rate of myopia in Asian people is 2 times higher than that of European countries.

This situation poses a public health problem because myopia can become one of the leading causes of blindness."Severe myopia makes you more susceptible to eye diseases such as cataracts, glaucoma, retinal detachment or macular degeneration, which leads to loss of vision," the authors warn.

Scientists recommend that children need eye exams every year to detect eye health problems in a timely manner.