Abstract: when the adjustment ability of eyes is overused in long-time close reading, reading too small words and computer operation for too long, it can cause visual fatigue symptoms such as eye swelling and pain, dry hair, blurred vision, heavy eyelids, and even headache, orbital pain, and even nausea and vomiting. This leads to the deepening of myopia.
many myopia friends are very concerned about adults. Will myopia deepen? This problem varies from person to person. Generally speaking, with the increase of age and the reduction of long-term eye use time, the vision will tend to be stable and the degree of glasses will not increase. However, some diseases can also deepen myopia, which is worthy of attention.
1. Visual fatigue
at present, the emergence of more and more people with “visual fatigue” is the manifestation of the change of modern lifestyle. When the adjustment ability of eyes is overused in long-time close reading, reading too small words and computer operation for too long, it can cause visual fatigue symptoms such as eye swelling and pain, dry hair, blurred vision and heavy eyelids. In serious cases, headache, orbital pain, even nausea and vomiting can also occur. This leads to the deepening of myopia.
in addition, improper glasses will also pay more attention to fatigue and myopia. However, it should be emphasized that myopia is not that the higher the degree of glasses, the clearer it is. The corrected visual acuity of both eyes can reach 1.0. Among thousands of myopia patients who have recovered their visual acuity, some friends found that they often have visual fatigue because they wear too high myopia glasses through medical optometry.
2. Pathological myopia
pathological myopia, its diopter exceeds 1000 degrees, up to 3000 degrees. Pathological myopia occurs earlier (it can occur between 5 and 10 years old) and progress rapidly. It continues to develop after the age of 25. The degree of myopia can reach more than -15.00d. It is often accompanied by fundus changes and vision is not easy to correct. It is also called degenerative myopia. It is an eye disease characterized by visual dysfunction caused by progressive deepening of diopter, continuous growth of ocular axis, progressive damage to eye content and retinal choroid tissue The disease rate is about 1% ~ 12%.
pathological myopia is a kind of high myopia, which does serious harm to visual function. Pathological myopia is mainly caused by genetic factors. Therefore, although some people are not engaged in the work of close vision, they will still get sick, and serious complications such as retinal degenerative hole, retinal detachment and macular hemorrhage can occur.
pathological myopia complicated with fundus lesions has a gradual process from light to heavy. In case of retinal detachment, retinal degenerative holes often occur first. As long as the fundus examination is carried out regularly and in detail, the degenerative holes around the retina are found as soon as possible, and retinal photocoagulation is carried out in time, the occurrence of retinal detachment can be avoided, Visual function is well protected. If retinal detachment occurs, surgical treatment is needed. If macular hemorrhage occurs, fundus fluorescein angiography and OCT examination are needed for further diagnosis and treatment.
, when the blood glucose level of diabetics increases to a certain extent, the sugar content in the eyeball also increases, resulting in the decrease of aqueous humor osmotic pressure in the eyes. The lens may be in the “hypertonic state” due to the increase of glucose. Water can permeate the lens capsule, enter the lens cortex, and the lens is edema. It causes the increase of refractive power and produces myopia symptoms. Diabetic patients can suddenly develop myopia, or their old presbyopia symptoms are relieved. The degree of myopia caused by diabetes is often unstable. When the diabetes is effectively treated and the blood sugar is controlled at a normal level for a period of time, the myopia symptoms will gradually reduce to disappear. Therefore, the patients can also be restored to the right eye, or need to wear the presbyopic glasses when reading.
cataracts are originally transparent eyes. The lens gradually changes into yellowish brown. The refractive index increases due to the increase in the density of the lens, so the refractive ability of the lens is enhanced, just like the sudden increase in the multiple of the magnifying glass, resulting in the continuous rise of myopia and worse vision. Myopic friends may also have the phenomenon of increasing the degree of myopia during the formation of senile cataract, while friends without myopia do not need to read with the help of presbyopia glasses because of the occurrence of senile cataract. The degree of presbyopia is improved, just like rejuvenating. Some people jokingly call this phenomenon “the second spring of vision”. For friends with high myopia, if they find that their glasses suddenly deepen at the age of 50, it is likely to be a manifestation of cataract and they must see a doctor as soon as possible. Dimensional vision has a national invention patent for the treatment of early cataract in the elderly. You can consult the local dimensional vision franchise store for rehabilitation.
when talking about glaucoma, many people often “talk about cyanosis”. Because glaucoma is an eye disease that seriously threatens vision and visual function, it is mainly related to the increase of intraocular pressure after the block of “aqueous humor” circulation. If effective treatment measures are not taken, high intraocular pressure will compress the optic nerve, resulting in the gradual atrophy of the optic nerve, and the visual field will gradually lose and cause blindness.
study found that the prevalence of primary open-angle glaucoma in high myopia was significantly higher than that in emmetropia and mild myopia, and the higher the degree of myopia, the more likely it was to be complicated with primary open-angle glaucoma. High myopia above 600 degrees is a highly significant risk factor for glaucoma optic neuropathy. At the same time, high myopia combined with primary open-angle glaucoma causes elevated intraocular pressure, which is easy to further prolong the anterior and posterior diameter of the ocular axis and gradually deepen the degree of myopia.