This is an automatically translated article.
The article is professionally consulted by Master, Doctor Hoang Thanh Nga - Ophthalmologist - Department of Medical Examination and Internal Medicine - Vinmec Ha Long International General Hospital.
Lasik nearsightedness surgery is one of the refractive errors that many people choose because it is fast, safe and effective. However, this method is not indicated for all patients with myopia.
1. What is lasik surgery?
Normally, when light passes through the eye, it will focus on a point on the retina, then transmit to the brain so that we can see that object thanks to the lens system including the cornea and lens. When there is a refractive error, the light passing through the eye cannot focus properly on the retina, leading to blurred vision or no vision.
LASIK stands for Laser Assisted in Situ Keratomileusis, which is a method that uses lasers to correct the curvature of the cornea, thereby helping light rays to focus properly on the retina. This method is used to treat refractive errors such as nearsightedness, astigmatism, and farsightedness.
LASIK là phương pháp dùng tia laser để phẫu thuật mắt
2. Lasik surgery to cure myopia
Lasik eye surgery to correct refractive errors has many advantages, but this method is not for all people with myopia. Subjects indicated for lasik surgery include:
Patients must be 18 or older: The eyeball always develops at a different rate, so when 18 years of age or older, the eyeball has a stable structure. determined. Patients should be less than 40 years old: Because after the age of 40, the accommodation ability of the eyes begins to deteriorate over time, so if the LASIK eye surgery is performed at this time, the accuracy is not high, so the patients above 40 years old, but with myopia above 6 is often advised to wait a little longer when there is a cataract, then surgical correction at the same time. Refraction stabilization for a period of at least 1 year and preferably 2 years: Refractive error stabilization is assumed within 1 year not to increase by more than 0.75 degrees.
Do not have acute and chronic eye diseases such as: keratitis, uveitis, glaucoma, keratoconus, cataract... If the patient has dry eyes: Need treatment Treatment of dry eyes before surgery The cornea does not have any scars or scratches because if it does, it will affect the laser keratoplasty. Do not have some systemic diseases such as: Lupus, rheumatoid arthritis or scleroderma because it will affect the healing process after surgery. Some steroids or immunosuppressants will slow healing after surgery, and some can cause dry eyes. Therefore, before surgery or intending to have surgery, it is necessary to inform the doctor about the drugs that are and have been used in the past one month. Not pregnant or breastfeeding.
Phụ nữ đang mang thai không nên phẫu thuật Lasik
People with large pupils may experience complications after lasik surgery such as glare, or starbursts. Therefore, other methods can be used instead. Corneal thickness is a factor determining whether a patient is suitable for surgery, the patient must have a cornea that is not too thin, a thickness of at least 0.5mm. The refractive index is not too high: People with too high refractive error of more than 10 diopters do not have indications for LASIK surgery. People who regularly participate in sports activities such as football, volleyball or swimming are not suitable for wearing glasses. Feeling uncomfortable when using vision correction devices such as glasses, contact lenses
Lasik surgery method has advantages such as:
Gentle, no pain during and after surgery, no bleeding. High safety and accuracy with modern laser machines. Quick surgery in a few minutes for each eye and discharge immediately after surgery. Vision recovers quickly during the day, can return to basic work the next day. However, this method is aimed at regaining clear vision and reducing dependence on vision correction devices such as glasses or contact lenses, but it does not help the eyes to get rid of nearsightedness and still be able to be nearsighted again after surgery because of many reasons. reason.
Phẫu thuật Lasik nhẹ nhàng không chảy máu
3. Notes before and after lasik surgery
Before surgery, there are a few things to keep in mind such as:
Before deciding to have surgery, it is necessary to discuss with a specialist to know the issues to know when performing surgery such as vision recovery, complications.. . It is necessary to inform the doctor about your health problems such as allergies, eye diseases, systemic diseases and medications you are taking. If you are determined to have Lasik surgery, you should stop using contact lenses for a period of time before surgery to allow the cornea to return to its original shape. Determine whether current and future jobs are suitable for lasik surgery. Sports such as boxing, wrestling.. Not suitable for surgery.
Attention on the day of surgery should not make eye makeup, volatile substances such as perfume, oil.. Avoid affecting the surgery. The clothes you wear should not have cotton fibers because they can get into your eyes during surgery. After surgery
There is an uncomfortable feeling such as eyestrain, difficulty opening eyes, watery eyes a few hours after surgery, no need to worry because these symptoms will disappear quickly. Activities such as reading, watching TV or other simple work can be done one day after surgery. Regular eye rest and artificial tears should be applied. Do not get water in your eyes for the first week after surgery. Absolutely do not rub your eyes or allow injury to the eyes. Wear eye protection all day for at least the first 3 days. Vigorous, impactful activities should be avoided for 1 month. Scheduled re-examination, if there is any abnormality, you should always re-examine to handle.
Sau mổ người bệnh cần tái khám theo lịch hẹn của bác sĩ
When intending to have lasik surgery, it is necessary to be fully consulted and examined to rule out contraindications to lasik surgery. Therefore, when you are nearsighted and want to undergo lasik surgery for treatment, you should go to medical facilities to be examined to see if you are eligible for surgery or not.
To register for examination and treatment at Vinmec International General Hospital, you can contact Vinmec Health System nationwide, or register online HERE
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