“Awful! In any case it is impossible to look at your cell phone once put out in the evening light,” an article with such content has spread rapidly among Chinese families and scared many parents.
it not only contains scary photograph of a red-eyed, but said that, if you sit in the mobile phone at night for 30 minutes, this can lead to pathological change in the macula of the eyes, a sharp deterioration of vision and even blindness. Computers, mobile phones and other devices with displays have become an integral part of the lives of our youth. Blind whether it is because of this, even before the onset of old age?
the world health organization (who) and International Agency for prevention of blindness decided that every year on the second Thursday of October will be celebrated world sight day. It is intended to draw the world’s attention to the problems of blindness and visual impairment. In 2019 world sight day observed on October 10 and the theme that year was the FIRST VISION (“Vision first”).
Can game mobile phone in the dark cause blindness?
whether online games in the dark night cause macular degeneration (JP) and even blindness? Professor sun Xiaodong, Deputy Director, First people’s hospital of Shanghai and Deputy Governor of the standing Committee of the ophthalmology service of the Centre of clinical medicine, noted that this assertion has no scientific basis and is an obvious exaggeration. Yet at night, the human pupil naturally expands to more light coming in to the area of the macula. Emitted by different terminals, such as mobile phones, iPad, the light has a high contrast with the environment that can not only cause eye fatigue. The concentration of bright light can also affect sleep patterns and lead to its violation.
the macula is an important anatomical structure in the center of the retina, its size is less than 0.07 square millimeter, but it collects 80% of visual information is the area with highest visual acuity, and nerve tissue with high oxygen consumption and energy. With increasing age and duration of irritation of the bright light, and with the combined effect of other factors, the area of yellow spot, the retina and other structures of the eye are subjected to pathological changes, causing a decline in visual functions and a decline of its severity. This is called age-related macular degeneration. It has become one of the most serious disease of the elderly in China, leading to blindness.
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macular Degeneration of the retina is divided into two types: dry and wet. Dry AMD manifests as minor blurred vision, distorted vision and a slow deterioration of vision. In severe cases, the visual field appears a Central dark spot (scotoma). In wet macular degeneration in 90% of patients within one year there has been a significant vision impairment and even blindness. Blurred vision when wet age-related macular degeneration is particularly severe, it accounts for almost 90% of cases of severe macular degeneration.
Protect your eyes young
Professor sun Xiaodong recalled that the prevention of age-related macular degeneration should begin from a young age, need to develop good habits to preserve the health of the eyes and avoid prolonged contact with electronic devices.
In bright sunshine, or when you spend in the sun for a long time, it is best to wear sunglasses to prevent eye damage in a bright light.
Elderly people over 50 years of age, and patients with diabetes should have regular vision screening by an ophthalmologist. If you have any symptoms of macular degeneration, early treatment and diagnosis can help prevent progression of the disease.
“Before that, there was no effective treatment, and even with early diagnosis, it was impossible to prevent loss of vision. Now, however, wet age-related macular degeneration is no longer an incurable disease. Elderly people often need to carry out a self-test. Than earlier you will be able to detect the disease, the faster it can be cured. If the pathological changes continue for a long time, and the degeneration has reached a severe, or the treatment is carried out in the period of atrophy or scarring of tissues, the results are pretty mediocre,” — draws the attention of Professor sun Xiaodong.
Distorted vision is a characteristic feature of macular degeneration. It is usually possible to discover on your own if you use home popular method of self-test — the Amsler grid test. For comparison, hypermetropia and senile cataract rarely have this symptom is distorted vision. To test, you’ll need a blank sheet of paper on it you need to draw a lot of identical squares. Then look at these lines, if the lines seem to be curved, then this is the easiest way to identify the early stage of a distorted vision.
so, how to treat macular degeneration after its detection? Professor sun Xiaodong stressed that in the past, doctors used such traditional methods of treatment like laser photocoagulation, photodynamic therapy, transpupillary thermotherapy, injection of corticosteroids into the vitreous body of the eye, and also macular surgery, but they had some limitations and is not currently the first choice in the selection of therapy. In recent years, was discovered a key pathogen that leads to abnormal neovascularization in wet macular degeneration, and it has a clear relation to vascular endothelial growth factor (VEGF). Due to this discovery of anti-VEGF therapy has become a major modern method of treatment for wet macular degeneration, which can monitor the progression of the disease and reduce vision loss and improve the quality of life of patients, but they are required to undergo active treatment.
“Elderly patients with diseases of the eye, such as age-related macular degeneration, require long-term therapy, but unfortunately, only less than 20% of patients receive appropriate outpatient treatment,” said Professor sun Xiaodong.
Diabetics should pay more attention to the screening of the ocular fundus
Professor Dai Hong from the Beijing hospital recalled that patients with diabetes should pay special attention to the screening of the ocular fundus. Diabetes is a complex chronic constantly progressive disease, and its complications can affect various organs throughout the body. When it affects the tissues of the eyes, it can cause diabetic retinopathy, diabetic cataract and diabioticheskoi the ametropia.
according To “Chinese guidelines for prevention and treatment of type II diabetes” (published 2017), patients with type II diabetes should undergo first comprehensive eye exam immediately after diagnosis. Patients with type I diabetes should undergo a comprehensive eye examination within 5 years after diagnosis. The new guide emphasizes that patients without diabetic retinopathy should undergo eye examination every 1-2 years, and for patients with diabetic retinopathy, the frequency of surveys needs to be increased.
Patients with diabetic retinopathy (including diabetic macular edema) might not have marked clinical symptoms, so it’s important to undergo regular eye screening to prevent blindness. Type II diabetes often have a patient for some period of time before diagnosis and the odds of the probability of pathological changes in the retina at the time of diagnosis is quite high. Therefore, patients with type II diabetes should hold the first examination of the fundus and other vision examination as soon as possible after diagnosis.
“In the treatment process, control of complications is control over the causes of the disease. In other words, taking control of your diabetes, you should also pay attention to eye disease, to then treat complications,” said Professor Dai Hong.
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