Why do other people fall asleep every day and play with their cell phones without myopia, while they pay more attention to eye hygiene but unfortunately myopia?
This is closely related to the formation of myopia. Myopia is the result of a combination of internal and external factors, including genetics and environment. Children of parents with high myopia are very susceptible to myopia, even if they spend a lot of time outdoors and very little time using their eyes at close range, while children of parents without high myopia have a relatively low incidence of myopia and develop myopia at a later age.
In the early stages of myopia, many people can only see far away clearly and can see clearly with a little squinting. Is it necessary to wear glasses to correct this?
For children: If the degree of myopia is low (not more than one hundred degrees), the child can see the blackboard clearly, and there is no obvious squinting action and no obvious visual fatigue, then the child can be observed first. If the myopia starts at a low level (more than one hundred degrees), the child can see the blackboard clearly without obvious squinting and visual fatigue. However, if myopia worsens and the child is unable to see the blackboard or needs to squint to see clearly, it will lead to a dramatic increase in myopia, which requires timely medical optometry at a regular professional hospital to control the progression of myopia.
For adults: because their refractive state is relatively stable, whether to wear glasses is mainly based on their needs, if the vision does not affect daily life, do not necessarily need to wear glasses.
Is it myopia if I can’t see clearly? Do I need to go to the hospital for a diagnosis?
It is recommended to go to a professional hospital for medical optometry and eye system examination for the first time to confirm myopia. Generally speaking, children under the age of 12 need to have a dilated eye exam, while children and adults over the age of 12 do not necessarily need to have a dilated eye exam; however, many older children and adults are prone to overcorrection and poor best-corrected vision due to long-term visual fatigue and high myopia, which also require a dilated eye exam.
I often hear that the early stage of myopia is pseudomyopia, what is the difference between pseudomyopia and true myopia? Do I need to wear glasses for pseudomyopia?
Pseudomyopia: This is a condition in which the prolonged use of the eyes at close range causes tension or spasm in the regulation, resulting in the inability to relax the regulation when looking at distance and a decrease in distance vision. This type of patient is treated with dilating medication, i.e. ciliary muscle paralyzing agent, and after the adjustment is relaxed, the patient may appear to be ortho or mildly farsighted. These patients do not need to wear glasses, but need to reduce the amount of time spent in close proximity, increase outdoor activities, and maintain dilated pupil therapy if necessary to recover.
For low myopia, dilated eye examinations are required to distinguish between true myopia and pseudomyopia.
When you wear glasses, your prescription grows, so you shouldn’t wear them in the first place?
In fact, the act of wearing glasses itself does not lead to an increase in myopia, the main reasons for the deepening of the prescription are.
1, wearing inappropriate glasses: many people to save time, directly to the irregular opticians optometry and prescription, optometry technology is poor and prescription degree is not accurate, easy to lead to the degree of increase.
2, unreasonable eye habits: many people wear glasses after a long time close eye, such as playing cell phones and computers, resulting in regular eye fatigue, the gradient continues to deepen.
3, not according to the doctor’s requirements to wear glasses: for moderate and high myopia, need continuous glasses. Many people have the habit of taking off their glasses when they use their eyes at close range or when they rest to give their eyes a “rest”, but in fact, wearing glasses when they are taken will make the adjustment function of glasses in an unstable state, increasing the burden on the ciliary muscle of the eyes and leading to an increase in myopia.
4, their own eye condition: for pathological myopia and hereditary myopia people, whether or not wearing glasses, their myopia will increase with age. But overall, people who wear glasses strictly under the guidance of a doctor have a much lower increase in myopia than those who do not wear glasses.
I have been wearing glasses for a long time and my eyes look bulging out (distorted) after I take them off, are the glasses the cause? Can I get effective improvement by wearing contact lenses?
The bulging of the eye in myopic patients is not caused by wearing glasses, but by a gradual increase in the length of the anterior and posterior diameters of the eye (eye axis) as myopia progresses. In general, an increase of 300 degrees in myopia increases the axis of the eye by 1mm, so patients with high myopia will have a more protruding eye than those without myopia.
In addition, we wear myopia glasses for concave lenses, imaging is smaller. The higher the myopia the more pronounced the lens. This makes people who usually wear myopic glasses all the time see their eyes smaller through the lenses, and once they take off their glasses they feel that they are bigger and more prominent. This distortion is an illusion caused by the optical effect of the glasses themselves. Wearing contact lenses does not improve the convexity of the eyes caused by the increase in myopia, but it can reduce the visual effect of the optical effect.
Can a lower prescription reduce eye fatigue and result in a slower increase in prescription?
At this stage, research shows that for adults, because the prescription has been stabilized, moderate undercorrection can partially relieve eye fatigue, but the premise of undercorrection is that it does not affect the patient’s daily life, the distance visual acuity is at least 0.8, and the undercorrection does not exceed 50 degrees.
However, for children and adolescents, undercorrection may lead to more severe visual fatigue and faster myopia progression.
Can anti-fatigue eye drops be used to relieve fatigue in medium and high myopia eyes?
Anti-fatigue eye drops can partially relieve visual fatigue, but they are still not recommended for long-term use in large doses.
First of all, except for a few eye drops packaged in small doses, other eye drops contain more or less preservatives. Long-term use of eye drops containing preservatives can lead to corneal damage and secondary symptoms such as dry eyes and photophobia.
Secondly, the ingredients of anti-fatigue eye drops vary, some eye drops (such as vitamin B12, sodium vitrate) are mainly based on nutritional ingredients, which can well relieve the symptoms of dry and sore eyes caused by visual fatigue, and point eye comfort, no obvious corneal toxicity; while some anti-fatigue eye drops are used to constrict blood vessels and reduce eye congestion to reduce the symptoms of visual fatigue, but at the same time have the effect of pupil reduction can induce acute Closed-angle glaucoma, and long-term use of vasoconstrictive eye drops can make the rebound of vasoconstriction more serious, visual fatigue and red blood symptoms more serious, and even lead to subconjunctival hemorrhage, etc.