Can eye fatigue cause nearsightedness?

Written by Wang Fang
Ophthalmology
Updated on September 03, 2024
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Eye fatigue can exacerbate myopia, and it is an important factor in worsening nearsightedness. When the eyes look into the distance, they are in a completely relaxed state, which does not cause or worsen myopia. Myopia occurs due to near-distance eye activities. Prolonged close-distance eye activities and working too closely can lead to chronic fatigue in the external eye muscles. When this happens, the eye axis is stretched and, over time, cannot fully return to its original state, resulting in the onset or worsening of myopia. Therefore, during daily eye use, it is essential to avoid excessive duration and too close distances to prevent fatigue and thus avoid worsening myopia.

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Written by Zhou Qing
Ophthalmology
1min 57sec home-news-image

How to treat high myopia?

High myopia refers to a degree of nearsightedness above 1000 degrees. High myopia brings great troubles to people, even affecting their diet and preventing them from participating in high-intensity physical exercise. It may also lead to complications such as retinal detachment, cataracts, macular hemorrhage, macular degeneration, vitreous liquefaction degeneration, and glaucoma. The treatment of high myopia has always been a major challenge in ophthalmology. With the advent of refractive lens exchange surgery, after extensive clinical practice, it has now become a better option for correcting vision in patients with extremely high myopia. The refractive state of the eyeball is mainly determined by the refractive power of the eyeball and the length of the eye axis. In cases of nearsightedness, the lengthening of the eye axis causes the light to focus in front of the retina, making it difficult for patients to see distant objects clearly. During refractive lens exchange surgery, a concave lens specifically tailored to the patient is implanted into the eyeball to change the focal point of the light so that it accurately focuses on the retina, achieving the purpose of correcting nearsightedness. Refractive lens exchange surgery maintains the integrity and accommodative function of the eye's physiological structure, has a larger optical zone, eliminates aberrations, and has a wider range of adaptability compared to corneal refractive surgery. Post-surgery, patients experience less discomfort, faster vision recovery, stable refraction, and no regression phenomenon.

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Written by Huang Kun Mei
Pediatrics
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Can massage cure myopia in children?

If a child develops myopia, it generally cannot be cured through massage. Depending on the specific case of myopia, if it is pseudo-myopia, it can be cured by massage. However, if it is confirmed as myopia after a dilated eye examination, massage cannot cure it. Once a child has myopia, the degree of myopia can increase by 50-100 degrees per year, so it is essential to control it promptly. After a series of examinations, if the child is suitable for orthokeratology lenses, these lenses should be used as they are the best method to control myopia.

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Written by Zheng Xin
Ophthalmology
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What lenses should be used for nearsightedness?

Myopia, or nearsightedness, refers to a refractive condition where, in a relaxed state of accommodation, parallel light rays are focused in front of the retina after passing through the eye's refractive system. Myopia is categorized by degree into mild myopia, which is less than or equal to 300 degrees, moderate myopia ranging from 325 to 600 degrees, and high myopia, which is over 600 degrees. Generally, the degree of myopia is within 600 degrees, and most patients do not exhibit any pathological changes in the fundus. They require the use of suitable concave lenses for correction. If the degree of myopia exceeds 600 degrees, a fundus examination is necessary. If there are no special changes in the fundus, correction can also be made using appropriate concave lenses.

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Written by Hu Shu Fang
Ophthalmology
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Can 600-degree acquired myopia be inherited?

A myopia of 600 degrees is considered high myopia, and it can be inherited by the next generation. Moreover, eyes with high myopia are prone to other complications at the back of the eye, such as retinal breaks, macular holes, and posterior staphyloma. Therefore, it is crucial to pay attention to high myopia and have regular check-ups. If both parents have high myopia, there is an 80% chance that their children will tend to be myopic. If one parent has high myopia, there is a 50% chance that their children will tend to be myopic. Even if neither parent is myopic, there is still about a 20% chance that their children will be myopic.

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Written by Li Zhen Dong
Ophthalmology
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The difference between nearsightedness and farsightedness.

Myopia is characterized by clear vision up close and blurred vision at a distance; hyperopia is characterized by clear vision at a distance and blurred vision up close. The main difference between myopia and hyperopia is the issue with the eye’s axial length. In an unaccommodated state, when parallel light rays enter the eye and focus in front of the retina, it is called myopia; when they focus behind the retina, it is called hyperopia. Myopic glasses are concave lenses, while hyperopic glasses are convex lenses. When myopia or hyperopia occurs, it is important to rest, reduce close-up activities, avoid eye fatigue, use eyes properly, eat a light diet, adjust your attitude, have regular check-ups, and pay attention to vision health.