Abstract: for friends with high myopia, if they find that their glasses suddenly deepen or their old flowers suddenly reduce at the age of 50, it is likely to be a manifestation of cataract and they must see a doctor as soon as possible.
many myopia friends are very concerned: will adult myopia deepen? This problem varies from person to person. Generally speaking, with the growth 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.
at present, the emergence of more and more people with “visual fatigue” is the manifestation of the change of modern lifestyle. Long time close reading, reading too small words, long computer operation time, etc. will overuse the eye adjustment ability, which 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.
then, how does visual fatigue lead to myopia or deepen myopia? As we all know, close eye use and high-intensity eye use can cause visual fatigue. If you are in the state of fatigue for a long time and can not be relieved and adjusted, it is easy to lead to ciliary muscle spasm. The continuous contraction time of ciliary muscle is too long, which makes the eyes in the state of fatigue myopia for a long time, and regulatory myopia, namely pseudomyopia, will occur. For regulatory myopia, if it is not treated early, it will become true myopia, so we must pay attention to it.
pathological myopia, its diopter generally exceeds 1000 degrees, up to 3000 degrees. Pathological myopia occurs earlier (between 5 and 10 years old) and progresses 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 progressive deepening of diopter, continuous growth of ocular axis, progressive damage to ocular contents and retinal choroid tissue, resulting in visual dysfunction. Its prevalence rate is 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 can have serious complications such as retinal degeneration, hole, retinal detachment, macular hemorrhage and so on.
pathological myopia complicated with fundus lesions have 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 can be well protected. If retinal detachment occurs, surgical treatment is required, and macular hemorrhage requires fundus fluorescence angiography and optical coherence tomography for further diagnosis and treatment.
, when the blood glucose level of diabetics increases to a certain extent, the sugar content in the eyeball will also increase, causing the aqueous humor osmotic pressure to decrease in the eyes, and the lens may be in relative “hypertonic” state due to the increase of glucose content, resulting in edema, resulting in increased refractive power and 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, and the patients can be restored to normal vision.
cataracts are originally transparent eyes, and the lens gradually changes into yellowish brown. The refractive index increases due to the increase of lens density, so the light transmittance of the lens decreases and the refractive ability increases, resulting in the continuous increase of near vision and worse vision. Myopic friends may also have the phenomenon of increasing the degree of myopia during the formation of senile cataract, while friends who originally did not have 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 rejuvenation. Some people playfully call this phenomenon “the second spring of vision”.
for friends with high myopia, if they find that their glasses suddenly deepen or their old flowers suddenly reduce at the age of 50, it is likely to be a manifestation of cataract and they must see a doctor as soon as possible.
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 be gradually lost or even blind.
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 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.