Myopia may be due to ... birth date

Poor eyes often involve the continuous use of computers, watching television, reading habits too close to the eyes or reading where there is insufficient light and partly due to genetics. But a new study concludes, myopia depends heavily on birth.

The rate of Vietnamese students in myopia is increasing.Photo: VNN

Tel Aviv University's Israeli team led by Dr.Iossi Mandel studied medical records of 276,000 people who served in the country's armed forces. The ophthalmologists analyzed the optometrist data of investigators, both men and women, who had a medical examination for four years. The statistics are enough for doctors to find out the cause of myopia (the rate of nearsighted up to 30%) and generalize into rules.

The structure of the most perfect optical device - the eye - and the light nature of the vision have made Israeli scientists think, perhaps the cause of myopia is due to the strong effect of the rays. light up the newborn's still so weak visual system.

According to worldwide statistics, one in three people is nearsighted. The disease usually appears between the ages of 7 and 15, then, or gets heavier, or remains the same and until a certain age, depending on the person, will begin to decrease.

After comparing the visual acuity of those who had their health checked with their birth date, the doctors confirmed that the majority of myopia was born in the most sunny month of June and July. As for those born in December, January, the sky often shines and the day is short, the rate of myopia is also the lowest. From the above data, scientists believe that the relationship can be explained by the blinding sunshine of the summer acting on the child's unstable retina, making it more or less deformed, causing illness Myopia develops.

Russian scientists consider it just a hypothesis. Irina Baradulina, Hospital 'Vision' ophthalmologist, said: " Myopia is caused by many causes, most notably the genetic cause and the cause of surgery. The disease needs to be transmitted from generation to generation. there, even to the extent of myopia, scientists have identified a rule like this: people who have been dislocated are always nearsighted, and many people have too smooth joints and People with flat feet are also often nearsighted, so it cannot be based on one cause, but many other causes have been proven '.

And eye doctor optician Ekaterina Pavlova, who specializes in laser eye surgery, said: 'If you look at the problem from a different perspective, it is sunlight that works to prevent nearsightedness. The fact shows that in countries with much sunshine in the South of the latitude, the proportion of nearsighted people is always less than in the North latitude countries, the length of day is very short. The problem is that low light intensity forces people to 'strain their eyes', which is meant to shorten the distance between the face and the subject. That is the basic cause of myopia '.

It is Israeli scientists who also list other causes of myopia (genetics, characteristics of the profession), but they believe that their conclusions are still correct. If myopia (measured by dioxin) is divided into 3 levels, myopia is light (accounting for 18.8% of people who come for medical examination), average (8.7%) and severe (2.4%). People with mild myopia, in addition to the cause depends on the date of birth, and other causes. But for those with moderate and heavy myopia, the dependence on birthdays is very clear.

Understanding the causes of nearsightedness is necessary for the visionaries to find ways to prevent nearsightedness - the disease tends to increase.