Abstract: it is common especially in low-grade patients, but it is not as obvious as hyperopia, which is caused by the disharmony of regulation and collection. For high myopia, because the fixation target is too close to the eye, the collective effect can not cooperate with it, so monocular fixation is often used, but it will not cause visual fatigue., The eye is the first of the five senses. The fundus of the eye is a very large world. There are abundant blood vessels here. Each blood vessel is connected with the large blood vessels in the brain and the whole body; If myopia occurs in the eyes, in addition to vision problems, it will also involve blood vessels connecting the brain and the whole body, Cause corresponding lesions in blood vessels (this is also the reason why the Department of Neurology must check the fundus of the eyes); light people have symptoms such as itching, fatigue and blurred eyes, and severe people will cause headache, sore neck, shoulder and back, and even lead to systemic nervous disorders. They are bored with learning, lose concentration, start to slow down their response, become irritable, and become less interested in what they used to like, Academic performance drops, sleepy and sweaty at night, the body is easy to get tired, and has symptoms such as dizziness and loss of appetite., Due to many complications of myopia, the International Health Organization lists it as one of the three major diseases in the world together with cold and headache, which has become a serious social problem!, Clinical manifestations of myopia:, 1 Vision, the most prominent symptom of myopia is the reduction of far vision and normal near vision. Although the higher the degree of myopia, the worse the far vision, there is no strict proportion. Generally speaking, the far vision above – 3.00d will not exceed 0.1- 2.00d is between 0.2 and 0.3- 1.00d can reach 0.5, and sometimes it may be better., 2. Visual fatigue, especially in low-grade people, is not as obvious as hyperopia, which is caused by the disharmony of regulation and collection. For high myopia, because the fixation target is too close to the eye, the collective effect can not cooperate with it, so monocular fixation is often used, but it will not cause visual fatigue.,
eyes are the first of the five senses, and the fundus of the eyes is a very large world. There are abundant blood vessels here, and each blood vessel is connected with the large blood vessels in the brain and the whole body; If myopia occurs in the eyes, in addition to vision problems, it will also involve blood vessels connecting the brain and the whole body, Make the blood vessels have corresponding lesions (this is also the reason why the Department of Neurology must check the fundus of the eyes); mild cases produce symptoms such as itching, fatigue and dizziness of the eyes, and severe cases will cause headache, sore neck, shoulder and back, and even lead to systemic neurological disorders.
Bored with learning, inattention, slow response, irritable temper, lack of interest in the original favorite things, decreased academic performance, dreamy and sweaty at night, easy to get tired, dizziness, loss of appetite and other symptoms.
due to many complications of myopia, the International Health Organization lists it as one of the three major diseases in the world together with cold and headache, which has become a serious social problem!
clinical manifestations of myopia:
1 Vision
the most prominent symptom of myopia is the decrease of far vision and normal near vision. Although the higher the degree of myopia, the worse the far vision, there is no strict proportion. Generally speaking, the far vision above – 3.00d will not exceed 0.1- 2.00d is between 0.2 and 0.3- 1.00d can reach 0.5, and sometimes it may be better.
2. Visual fatigue
and
are especially common in low-grade patients, but they are not as obvious as hyperopia, which is caused by the disharmony of regulation and collection. For high myopia, the fixation target is too close to the eye, and the aggregation effect can not cooperate with it. Therefore, monocular fixation is often used, but it will not cause visual fatigue.
3. Eye position deviation
and
because myopia does not need to be adjusted when looking close, the collective function is relatively weakened. When the muscle strength balance cannot be maintained, the visual function of both eyes will be destroyed. Only one eye looks, and the other eye tends to the outside, becoming temporary alternating strabismus. If the visual function of strabismus is very poor and the strabismus occurs early, the strabismus will lose the fixation ability and become monocular exotropia.
4. The eyeball
and
are highly myopic, which mostly belong to axial myopia. The anterior and posterior axis of the eyeball is elongated, and its elongation is almost limited to the posterior pole, so it is often manifested as relatively prominent eyeball, deep anterior chamber, large pupil and dull reflex. Because there is no regulated stimulation, the ciliary muscle, especially the annular part, is atrophic; In extremely high myopia, the lens can not support the iris at all, resulting in mild iris tremor.
5. Fundus
low myopia has no obvious fundus change, and high myopia can cause fundus degenerative changes due to excessive elongation of ocular axis.