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What are the advantages and disadvantages of laser myopia surgery?_Industry News_

by:Eugenia     2022-03-30
With people's understanding of eye surgery and the requirements for eye vision, more and more people choose laser myopia surgery. Laser treatment of myopia surgery is not only fast, but also more accurate in the process of surgery. It greatly meets the needs of many people for good vision. The usual contact is excimer laser myopia surgery, femtosecond laser myopia surgery, etc. Any surgery has certain risks. Let's learn about laser myopia. What are the pros and cons of surgery. The advanced nature of laser myopia surgery sharp end treatment: laser treatment is carried out under computer control, the doctor inputs the degree of myopia into the computer before the treatment, the computer controls the range and depth of the ablation, and directs the laser to emit a series of laser pulses to irradiate the cornea , a smooth plane is cut in the center of the cornea, and a thin layer of central corneal tissue is cut for each pulse. After multiple pulses are irradiated on the corneal tissue, the corneal curvature is flattened, the original refractive error is corrected, and the light is directly focused on the retina , vision becomes clear. The ultraviolet laser used in the equipment has no thermal damage to the surrounding tissue, and the matrix layer receiving the laser has no regeneration ability, and will not rebound or recur. Shortness of time: Generally speaking, the operation time of laser myopia surgery is relatively short. The goodness of the effect: Generally, the visual acuity will recover better after laser myopia surgery. Laser myopia surgery disadvantages Laser surgery risks: possible complications include: infection, undercorrection or overcorrection, residual or induced astigmatism, halos and glare, decreased contrast sensitivity, decreased night vision, etc., corneal penetration, iatrogenic Corneal astigmatism, secondary keratoconus, irregular corneal flap, flap free, epithelial implantation, glare, etc. If these complications are detected in time and handled properly, most of these complications will not leave sequelae and will not affect the curative effect. But some complications do hinder vision recovery, such as preoperative myopia, postoperative overcorrection into high hyperopia; or no astigmatism before surgery, postoperative high astigmatism and so on. The most serious is the infection of the surgical corneal wound, which, although rare, can be a direct cause of blindness. Some diseases will seriously affect the effect of surgery, we call it an absolute contraindication to laser myopia surgery; patients with such diseases should never undergo myopia surgery. These mainly include: glaucoma, rabbit eye, keratoconus, severe dry eye and active eye inflammation. For people with high myopia, postoperative visual instability may exist.
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