Lasik Eye Surgery: What You Need To Know
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Laser assisted in-situ keratomileusis LASIK , is a procedure that uses a highly specialised laser excimer laser to correct myopia, hyperopia and astigmatism. Prior to the application of laser, a thin cornea flap is created using a specialised blade microkeratome or by using another specialised laser femtosecond laser. The cornea flap is lifted and the excimer laser is applied to the corneal bed. The laser does not burn or cut any tissue, but gently vaporises microscopic layers of cells beneath the cornea flap to change the shape of the cornea so that light may be better focused by the eye.
Subsequently, the cornea flap is repositioned on the cornea.
5 Things to Avoid After LASIK Eye Surgery
Currently, LASIK is effective for myopia up to degrees, astigmatism up to degrees, and for low to moderate hyperopia. However, this is dependent on the patient s corneal thickness. As the excimer laser is applied under the cornea flap, there is little risk of corneal scarring, minimal post-operative discomfort and pain, and usually requires eye drops for one week. Normal vision often returns within a day and regular activities can be resumed within the first few days. Stable vision is usually attained within one to three months.
LASIK is usually carried out as a day surgery, without the need for hospitalisation. During the procedure, the patient remains awake. The eye is first numbed with anaesthetic eyedrops. An eyelid retainer is then placed between the eyelids to prevent blinking. Next, a thin flap is created in the outer layer of the cornea with an instrument called a microkeratome a motorised blade or by using the femtosecond laser.
Things You Should Know Before LASIK Eye Surgery
The flap is lifted and an excimer laser is then used to remove tissue from the cornea, re-shaping the cornea to correct the refractive error. After the required correction, the flap is gently repositioned onto the cornea. After the operation, the patient will be required to rest in the clinic for about thirty minutes. The doctor will then check the patient's eyes to ensure that the cornea flap has been properly positioned before allowing the patient to leave. Related: Bloodshot Eyes and Bright Screens.
However, to be a suitable candidate, the patient must:.
Before the procedure, a comprehensive pre-operative consultation and examination is carried out to determine the patient's suitability for LASIK. However, it is important for the patient to have realistic expectations and be aware of the potential risks and side effects that may occur with the surgery. Related: Who is Suitable for Lasik.
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After a LASIK surgery, it is normal to experience slight discomfort or tearing that usually diminishes within the first day. However, it is important to comply with post-operative instructions and attend all post-surgery appointments. This article was last reviewed on Friday, August 31, All 3 types of laser eye surgery have similar results.
Your surgeon will talk through your options with you and help you decide on the most helpful one for you. There's usually no extra cost for this. With PIOL artificial lenses are placed in your eyes without removing your own natural lenses. It's a bit like building contact lenses into your eyes. Because the lens is inside your eye, you can do things you couldn't normally do in contact lenses, such as swimming or water sports.
PIOL can be a good option for younger people who are not able to have eye laser surgery, perhaps because they have a high eye prescription or a high degree of astigmatism. Later in life, RLE may be a better alternative. The surgeon makes a small cut in the surface of your eye and slips the news lens in through this.
No stitches are needed. It's normal to get some disturbance in your vision after PIOL but this should gradually settle down. Glare from oncoming headlights while driving at night is common to begin with. The surface of your eye may feel uncomfortable for a while. You may also have red blotches on the white of your eye for few weeks. Serious complications are rare and, if you do have any problems after surgery, they can usually be corrected. Cataracts when the lenses in the eyes become cloudy may develop earlier in life after PIOL. RLE is basically the same as cataract surgery.
The natural lens in your eye is removed and replaced with a new, artificial one. RLE may be a good option if you're older and you are not suitable for laser eye surgery, perhaps because you have a high eye prescription or have the beginnings of cataracts. Most people have some visual side effects and discomfort in the weeks or months after surgery but these should gradually settle down.
Laser eye surgery and lens surgery - NHS
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Everything You Should Know About LASIK Eye Surgery
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