Selection of astigmatism correction methods
Astigmatism is a common abnormal refractive state of the eye, which can lead to blurred vision and eye discomfort. All kinds of astigmatism correction methods have their advantages and disadvantages, so it is very important to find a suitable method. This article will elaborate on the selection of astigmatism correction methods from four aspects.
1. Correction of glasses
Glasses are one of the most common astigmatism correction methods, which can improve vision by correcting the combined effect of lenses. The advantages of glasses correction method are simple, relatively low price and convenient use. Depending on the degree and type of astigmatism, spherical aberration lens, cylindrical lens or double astigmatic lens can be used for glasses.
However, the correction of glasses also has its shortcomings. First of all, wearing glasses will limit the exposure angle of people. The visual environment cannot feel the light stimulus from the surrounding, which is not conducive to the multi angle communication between the eyes and the brain. Secondly, for the problem of high astigmatism, the correction effect of glasses is limited, and the discomfort of astigmatism cannot be completely eliminated. Finally, glasses are external devices, which are easy to fall off or be damaged.
If glasses correction is selected, it is recommended to go to a regular ophthalmic hospital for optometry, and regularly review and adjust.
2. Contact lens correction
Contact lens is a kind of corrective optical instrument directly placed on the eyes, which contacts the eyeball and receives the epithelial secretion on the cornea to moisturize. The advantage of the contact lens correction method is that it has a high degree of naturalness and does not limit the irradiation angle. At present, there are two types of hard contact lenses and soft contact lenses on the market.
However, contact lens correction methods also have their limitations. First of all, using contact lenses requires certain operating skills and daily cleaning and maintenance, which may require a period of adaptation for novices. Secondly, improper use of contact lenses or wearing them for a long time will cause discomfort such as eyeball compression and eyeball hypoxia. Finally, the price of contact lenses is relatively high, and it is easy to lead to complications such as eye infection.
If you choose contact lens correction, it is recommended to consult a professional ophthalmologist to understand your corneal condition, and choose a suitable contact lens brand and wearing method.
3. Laser surgical correction
Laser surgery is a method to correct astigmatism by removing the tissue on the cornea and changing the curvature of the cornea. Modern laser surgical correction methods mainly include LASIK, minimally invasive keratome LASIK (SMILE) and PRK.
The advantages of laser surgical correction method are stable correction effect, fast vision recovery, and no dependence on external equipment. However, laser surgery also has its risks and indications. Laser surgery requires corneal measurement and preoperative evaluation, and there are certain requirements for corneal thickness, astigmatism and corneal curvature. In addition, a certain recovery period and regular reexamination are also required after the operation.
4. Implantation of intraocular lens
Intraocular lens implantation is a surgical method, which can change the refractive state of the eyeball by implanting intraocular lens. The advantages of IOL implantation are stable correction effect, short operation time and fast recovery. It is suitable for some patients and does not require external correction equipment.
However, IOL implantation has its limitations. The surgical risk is higher than other correction methods, including infection risk, posterior chamber membrane proliferation, etc. Long recovery period and regular reexamination are also required after operation.
summary
Choosing a proper astigmatism correction method needs to consider many factors, such as the degree of astigmatism, personal living habits and economic conditions. Lens correction is simple and easy, contact lens correction is natural, laser surgery correction effect is stable, and intraocular lens implantation does not rely on external equipment. In the selection process, it is recommended to consult a professional doctor in a formal eye hospital and conduct a comprehensive preoperative evaluation to find a suitable astigmatism correction method.
