LASIK
What is LASIK?
Corneal surgery with excimer laser is to reduce or correct refractive errors in the eye.
What is the difference between LASIK, LASIK and PRK?
In LASIK surgery, after removing the flap (thin sheet) from the laser symmetry, after the laser, the corneal heart is returned to its place. In LASIK surgery, the epithelium of the corneal surface is removed with alcohol and then the laser The excimer is used and the epithelial flap is replaced and after the operation, a dressing contact lens is used for 3 to 4 days until the epithelium is repaired.
In PRK surgery:
The epithelium of the corneal surface is removed mechanically with the help of alcohol and after excimer laser, a dressing lens is used on the surface of the cornea until the epithelium heals.
Who can use excimer laser surgery?
Do?
People who are at least 19 years old, have an eye number of at least 1.5 years and their vision is complete with glasses, do not have eye or physical disease that limits the results of the operation, and their corneal imaging is the necessary criteria for surgery Have. People who have a thin cornea or have a hump are also not candidates for laser surgery.
If we can not use excimer laser surgery, what other options will we have besides using glasses?
Use hard contact lenses
Use of intraocular lenses
What are the possible complications of LASIK surgery?
Although complications are not common if the patient is chosen correctly, from complete lack of vision correction with or without glasses to eye infection and low vision or blindness have also been reported. Therefore, observing individual health issues after surgery and timely referrals to the treating physician and the correct use of medications are absolutely necessary and non-compliance can have irreparable consequences.
Is it possible for the eye number to return after the operation?
The probability of eye number recurrence depends on several factors such as how long the eye number has been fixed before surgery, the patient’s age, the degree of refractive error, and the degree of preoperative astigmatism.
What points should we follow before and after surgery?
It is better to wash the edges of the eyelids and eyelashes three times a day with baby shampoo diluted in water a few days before the operation, and use the drops on time after the operation according to the doctor’s instructions. If the contact lens comes out of the eye, throw it away and see your doctor as soon as possible. As long as the contact lens is inside the eye. (3 to 4 days after surgery) Avoid washing your face and bathing (water contact with the eyes). Cosmetics should be discontinued a few days before surgery and should not be used for at least two weeks after surgery. In case of dry eyes, this restriction may continue for several months after the operation.
Can presbyopia be treated with laser surgery?
Lasers that can also treat presbyopia have not yet been widely used, so myopia patients over the age of 40 should wear glasses for close-up work and study after surgery.
What are the risk factors before surgery?
Blepharitis or inflammation of the eyelids – Dry eyes – Thinness of the cornea – High astigmatism, not correcting vision with glasses, instability of the eye score in the last two years, age less than 19 years, seasonal allergies, underlying eye or physical diseases such as diabetes and rheumatic diseases ( In high-risk occupations, it is better to use PRK, such as nurses and medical staff, and people who work in contaminated environments, such as laboratories and factories, and to have high-risk occupations, such as agriculture, welding, and blacksmithing, working in chemical-contaminated environments. And toxic fumes.
Why do ophthalmologists themselves use less LASIK surgery and glasses?
Many ophthalmologists are elderly and if they operate, they will have to wear prescription glasses for most tasks, such as examining patients with a device, microscopic surgery, reading magazines and books, and writing prescriptions for patients, so they are reluctant to have surgery. . However, there are a number of ophthalmologists who have performed LASIK with full knowledge of side effects and are very satisfied.
Are patients who are pregnant and breastfeeding
Can they act?
No, due to the increase in steroid hormones during pregnancy and lactation, the probability of recurrence of eye number after surgery is higher than normal people, and it is better for these patients to operate a few months after returning to normal.
How long before contact surgery should I stop using contact lenses?
Two-week soft contact lenses, three-week RGP contact lenses, and 4-week PMMA hard contact lenses should be discarded.
Are different laser devices effective as a result of LASIK surgery?
Yes, more advanced devices bring better viewing results.
How long does it take to reach the final and expected vision after the operation?
Usually, the vision after the first day of surgery is very good and decreases a little in the following days, but gradually, with the regularity of the corneal epithelium layers, the vision becomes clearer day by day, from 2 weeks to three months after the operation, as expected. It turns out that the timely use of prescribed drops plays an important role in accelerating and stabilizing vision. These issues are especially important in the case of LASIK. PRK is more true. However, myopia may be blurred for up to a month after surgery, which gradually improves. People who were over 40 years old before the operation should wear reading glasses after the operation.
How long after surgery should you wear sunglasses?
Today, it is recommended to avoid exposure to direct sunlight and other sources of ultraviolet radiation for at least six months, especially in hot seasons, due to the effects of ultraviolet rays on the corneal stroma, which is regenerating, but the use of sunglasses in Indoor environments such as home and work are not necessary
How many days after the operation can we work with the monitor and computer?
Using a monitor, especially an LCD, is not a problem for a week after the operation, but it is better to avoid doing long and delicate eye work until the eye is completely calm.
Can we do strenuous exercise like bodybuilding after surgery?
All sports are not prohibited after the operation, as long as there is no injury to the eye, but in the case of swimming, it is better to wait up to 2 months.
Does a normal delivery after excimer laser surgery cause a specific problem?
No, laser surgery has nothing to do with natural childbirth or cesarean section.
Is there a possibility of rupture of the cornea following LASIK?
Myopics usually have thinner eyelids (retina) than normal people, which may rupture spontaneously or with a small blow and have nothing to do with surgery. One of the symptoms of rupture of the eyelid is the sight of light sparks, especially at night and in a dark environment, after which one side of the visual field becomes dark. In case of such symptoms, you should immediately go to the eye emergency department and after pouring the drops in the emergency room, check the retinal environment and consult a retinal specialist. It is necessary to complete the examination before the operation and if there is a hole in the retina, to have a retinal laser two months before LASIK surgery. In these cases, LASIK surgery or PRK is less risky than the LASIK auction. Whether or not they are operated on for the rest of their lives, they should be monitored annually by retinal specialists when needed
If part of the eye number returns, can surgery be performed again?
Yes, if the cornea is thick enough after the operation, it can be re-operated, but it should be noted that the risk of reoperation is usually higher than the initial operation and should be examined after corneal imaging.
How long should we use eye drops after surgery?
On average, artificial tears are needed at least 3 months after surgery. Betamethasone drops are usually gradually reduced or replaced with fluoromethalone drops every 6 hours for the first 2 weeks and after two weeks (depending on eye conditions and corneal response to the laser). Decloptin drops are usually stopped on the first day after surgery.
How many days after the operation do we need leave?
Although the duration of treatment depends on various factors, including the speed of wound healing, an average of one week of postoperative rest is recommended.
How long after surgery can we have a driver’s license correction surgery for an optometry test?
Depending on how quickly the postoperative vision improves, this period varies from one to three months after surgery.