What should I do if nearsightedness is inherited by my child?

Written by Zheng Xin

Ophthalmology

Updated on September 06, 2024

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Not all myopia is hereditary, but high myopia does have a genetic component. The occurrence of myopia is mainly related to genetic and environmental factors. If there are children in the family with a history of high myopia, they should develop good eye habits from a young age, or undergo genetic testing for high myopia. If myopia occurs, it can be corrected by wearing glasses, or by refractive surgery after reaching adulthood.

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Written by Zheng Xin

Ophthalmology

49sec

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The difference between amblyopia and myopia.

Amblyopia refers to a condition where, through examination, the eyeball has no organic lesions, but the vision is poor. Even after correction, the vision remains significantly lower than normal, generally less than or equal to 0.8, without any organic lesions in the eyeball. In such cases, amblyopia can be considered. Myopia, on the other hand, refers to poor vision that can reach normal or better levels after correction. The difference between the two is that amblyopia cannot be fully corrected through adjustment, whereas myopia can be completely corrected. In terms of treatment, myopia can be corrected by wearing glasses or undergoing surgery, while amblyopia can only be managed by wearing glasses or undergoing specific amblyopia treatments.

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Written by Li Zhen Dong

Ophthalmology

39sec

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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 Li Zhen Dong

Ophthalmology

46sec

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Does nearsightedness surgery require an incision?

There are two types of myopia surgery. One is performed using lasers, and the other involves making a small incision on the edge of the cornea to implant an artificial lens into the eye. Corneal laser surgery uses a laser to create a concave mirror on the cornea to resolve the symptoms of blurry vision when looking at distant objects. The ICL surgery, which involves the implantation of an artificial lens, significantly improves the patient's vision after the procedure. Both types of myopia surgeries are currently quite advanced in terms of technology. Therefore, patients who wish to stop wearing glasses and have clear indications from pre-operative examinations can consider undergoing myopia surgery treatment.

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Written by Zheng Xin

Ophthalmology

24sec

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Does nearsightedness surgery involve holding the eyelid open?

Eye surgery, apart from eyelid surgery, requires the use of a speculum to hold the eyelids open to fully expose the field of vision for surgeries involving the eyeball and the inside of the eye. Myopia surgery, which involves the surface of the eyeball, also necessitates holding the eyelids open. The surgery can then be performed with the aid of a laser.

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Written by Deng Jiang Tao

Ophthalmology

38sec

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Where is the incision made for nearsightedness surgery?

Firstly, myopia surgery essentially involves thinning the cornea by cutting it, which is like transferring the degree of myopia onto the cornea itself. Let's first talk about the layering of the cornea. From front to back, the cornea is divided into five layers, generally consisting of the epithelial layer, anterior elastic layer, stromal layer, posterior elastic layer, and the corneal endothelial layer. Among these layers, the stromal layer is the thickest, about 500 microns, accounting for over 90% of the total corneal thickness. Therefore, during myopia surgery, the main area of cutting is in the stromal layer of the cornea.