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How to choose myopia surgery with high degree and astigmatism?

Posting time:2022-12-03 09:29:18

How to choose myopia surgery with high degree and astigmatism?

Many people have this experience: they want to take off their glasses to learn about myopia surgery, but when they hear the words femtosecond, SMART, and ICL, they are stunned. In fact, there are basically two types of myopia surgery, one is laser surgery, and the other is lens implantation. The femtoseconds and excimers we often hear belong to laser surgery, while ICL belongs to lens implantation surgery. Lens implantation is to put a special "contact lens" into the eye; while laser myopia surgery uses a laser to thin the cornea a little so that the eye can see things clearly. The higher the degree, the thicker the cornea that needs to be cut. . Our cornea is divided into five layers, from outside to inside are the epithelium, the Descemet's membrane, the stroma, the Descemet's membrane, and the endothelium. It is the stromal layer that needs to be thinned by laser in myopia surgery, but because the epithelial layer and the preelastic layer are still on top of the stromal layer, how to thin the stromal layer leads to different surgical procedures such as half femtosecond and full femtosecond. Mode. Although there are many ways of myopia surgery, not all surgeries can be chosen casually, and not everyone can have myopia surgery. Whether myopia surgery can be done, and what kind of surgery is suitable, all need to be determined through strict preoperative examination. Generally, there are many preoperative examinations for myopia surgery, including uncorrected visual acuity, corrected visual acuity, corneal topography, eye axis, corneal thickness, ocular surface condition, etc. There are more than 20 examinations, which takes about 1 hour. The refractive properties of the cornea, such as corneal thickness, can better formulate a surgical plan. If the examination finds keratoconus, unstable refractive status, acute conjunctivitis, keratitis, dacryocystitis and other problems, it is not suitable for myopia surgery. Students who want to join the army, take the civil service exam, and apply for the military academy.

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