What is the uncorrected visual acuity of high myopia?

Written by Li Zhen Dong
Ophthalmology
Updated on May 10, 2025
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Myopia can be classified as mild myopia from 200-400 degrees, moderate myopia from 400-600 degrees, and high myopia as above 600 degrees. What is the uncorrected visual acuity for high myopia? There is no clear pattern for this because a visual acuity of 0.1 may be corrected to 1.0 with just 50 degrees, or it might not reach 0.5 even with 1000 degrees. Therefore, uncorrected visual acuity is not a standard measure for high myopia. The level of uncorrected visual acuity depends on the condition of the eye's axial length and diopter. If the change in the axial length is not significant, a minor uncorrected visual acuity is not crucial, and the required correction might be very low. Conversely, the longer the axial length, the higher the correction needed might be.

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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.

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Written by Lian Wen Xi
Pediatrics
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Can children's myopia be corrected?

Myopia in children can be corrected, but this correction simply brings the child's vision to a normal level and does not mean that true myopia can be reversed. Myopia can be divided into true myopia and false myopia. False myopia can be restored to normal vision through appropriate rest and a series of relieving recoveries. However, if diagnosed with true myopia, there is currently no method available to reduce the degree of myopia and restore the child's normal vision. Moreover, once true myopia occurs, it will not stop and typically increases every year until the child reaches adulthood, when it gradually stops. Therefore, before the child reaches adulthood, it is worth considering using methods such as wearing glasses and developing good eye habits to control the increase in the child's degree of myopia and to achieve the purpose of correcting the child's vision.

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Written by Li Zhen Dong
Ophthalmology
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Is 1000-degree acquired myopia hereditary?

High myopia of 1000 degrees can also be inherited. The inheritance of myopia is mainly significant in cases of high myopia. If both parents have high myopia, the heritability is almost above 90%. If one parent has high myopia, the heritability is 45%. If neither parent is myopic, the heritability is nearly 5%. Myopia is primarily formed due to improper use of eyes rather than hereditary factors, which are relatively rare and generally only account for about 10% of myopia cases. Therefore, correct use of eyes is very important.

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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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Can glaucoma patients undergo myopia surgery?

Glaucoma is a group of eye diseases characterized by atrophy of the optic nerve and defects in the visual field. Common symptoms include reduced vision, eye pain, and loss of visual field. In terms of treatment, it primarily involves the use of medications to control eye pressure or anti-glaucoma surgery to manage eye pressure, which helps delay the atrophy of the optic nerve and the loss of vision. However, since glaucoma has already caused damage to the optic nerve, it is generally not recommended to undergo myopia surgery, as it cannot improve vision.