Which is more serious, amblyopia or myopia?

Written by Luan Shu Lin

Ophthalmology

Updated on September 07, 2024

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Amblyopia and myopia are two different concepts; there is no comparative severity between them. Amblyopia refers to a condition where, despite correction, vision still does not reach 0.8, which is defined as amblyopia and generally occurs before the age of eight. Myopia, on the other hand, is a type of refractive error. This condition can be corrected by wearing eyeglasses, contact lenses, or through myopia surgery after reaching adulthood.

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Written by Zheng Xin

Ophthalmology

32sec

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At what degree of myopia do you need to wear glasses?

Myopia is a refractive state in which, when the eye's accommodation is relaxed, parallel light rays from the outside, after passing through the eye's refractive system, focus in front of the retina, this condition is called myopia. The occurrence of myopia is influenced by a combination of various factors including genetics and environment. Common clinical symptoms of myopia include decreased vision, which also affects normal daily life. It is recommended to wear glasses regardless of the degree of myopia if it impacts daily activities.

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Written by Hu Shu Fang

Ophthalmology

1min 20sec

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How can children with myopia recover their eyesight?

Children with myopia should go to a formal optometric center for eye examinations and to get properly prescribed glasses. After wearing glasses, it is important in daily life to not read or write in dim environments and to maintain a correct posture while reading or writing. Abide by the "rule of three": the distance between the eyes and the book should be about one foot; the distance between the body and the desk should be about one fist; and the distance from the tip of the pen to the holding point should be about one inch. This can help prevent the deepening of myopia in children. Additionally, after using the eyes for forty minutes, it is recommended to gaze into the distance or perform eye exercises to relieve eye fatigue. Children should engage in outdoor activities for more than two hours per day, and more than fourteen hours per week, and they should have regular check-ups, generally every six months, to ensure the prescription of the glasses matches the degree of myopia. Currently, there are also options like orthokeratology lenses that can be worn at night to effectively control the progression of myopia.

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Written by Li Zhen Dong

Ophthalmology

38sec

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Should the degree of myopia sunglasses be the same as the degree of myopia?

If you want to customize sunglasses or photochromic glasses with a prescription, the prescription should be exactly the same as that used for regular prescription glasses. The main purpose of these glasses is to protect the eyes from direct exposure to light, which can lead to excessive eye strain and cause symptoms like eye fatigue, pain, bulging, soreness, or the sensation of a foreign body in the eye. Typically, it is acceptable to use such glasses for prescriptions up to 500 degrees. However, it is generally not advisable for patients with high myopia, as these glasses do not provide clear vision.

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Written by Deng Jiang Tao

Ophthalmology

1min

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Does myopia correction rebound?

Will there be a rebound after myopia correction surgery? Generally, it relates to two aspects. The first is associated with your pre-surgery degree of myopia; the second relates to your habits in using your eyes after the surgery. Generally speaking, the higher the degree of myopia before the surgery, the more likely a rebound will occur. Roughly speaking, if your degree of myopia was above 700 degrees before the surgery, there's about a 20% to 30% chance of rebounding. However, a rebound does not mean it will return to the previous degree of over 700; typically, it might rebound by around 100 to 200 degrees. The second aspect is significantly related to your post-surgery visual habits. If, after the surgery, you frequently use computers, read documents, or use your phone, there’s a higher chance of experiencing some degree of rebound. Conversely, if your screen time is less, the proportion of myopia rebound tends to be smaller.

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Written by Li Zhen Dong

Ophthalmology

42sec

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Can eye fatigue lead to nearsightedness?

Myopia is characterized by clear vision up close but blurry vision at a distance, primarily caused by changes in the eye's axial length. Several factors contribute to the development of myopia: first, hereditary factors; second, inappropriate use of eyes, such as prolonged usage leading to eye fatigue, which can worsen the degree of myopia. Typically, the development of myopia occurs under the age of 20. After 20, there shouldn't be further development; if there is, it is referred to as pathological myopia. Therefore, it is important for patients with myopia or eye fatigue to use their eyes correctly, reduce close-up activities to avoid eye strain, and have regular check-ups to monitor their vision.