Lasik eye surgery is a kind of laser vision correction that would Lasik Eye Surgery-permanently alter the shape of a person’s cornea – this improves the vision vastly, and brings about a drastic reduction in the need for glasses or contact lenses. Clear vision is defines as the proper refraction of light rays by the cornea and the lens – this makes the images focused on the retina. If there is improper focus and then the images come out blurry – this is called a refractive error, and the cause of it is an imperfectly shaped eyeball, lens or cornea. So what does Lasik eye surgery do, then? It uses an Excimer Laser (a Ultra Violet laser), which removes the corneal tissue precisely, bringing about a corrected corneal shape which gives better focusing.Before surgery, the eyes are completely examined to make sure of proper health, and tests are carried out to determine the cornea’s curve, the position and size of the pupils, the eyes’ shape, and the cornea’s thickness. In fact, the last issue is taken into account to make sure that enough cornea tissue is left after surgery. The patient has to give a signed informed consent form, which states that he/she is aware of the risks involved, the benefits, the alternative options, and the possible complications. The procedure itself is relatively short, and takes about 10 to 15 minutes for each eye, it is a kind of outpatient surgical procedure. Lasik eye surgery is having a problem with the eye. lasik is used to correct refractive errors, Lasik eye surgery is a treatment that perhaps the cornea in order to produce clear vision. The Lasik refractive eye surgery that can cure myopia (or so called nearsightedness), hyperopia (or so called farsightedness), and astigmatism, and it is also reduce patient's dependency on contact lenses and glasses. Because refractive error's hinder on focusing the ability on the eye, patients who suffer from these conditions experience blurred vision.

Cornea - is a transparent front part of the eye that covers the iris,pupil, and anterior chamber. Together with the lens, the cornea refracts light, accounting for approximately two thirds of the eye's total optical power.

Types of Corrective Eye Surgery

There are two types of vision correction surgery. They are LASIK and PRK. LASIK, also written as Lasik, is a refractive surgery. It is used to correct myopia, hyperopia and astigmatism. A laser is used in this surgery. The acronym PRK stands for photorefractive keratectomy. It is also referred to as Advanced Surface Ablation. Lasik is preferred over PRK as the time taken for the patient to recover and also the pain caused to the patient is less with Lasik. Nevertheless, the PRK procedure is medically justified to be a better alternative than the Lasik procedure. A number of people undergo Lasik as they do not want to wear eyeglasses and contact lenses.

Laser Eye Surgery Risks:
There are many risks of laser eye surgery. Here are the risks

• Dry Eye: Dry eye after Lasik eye surgery is a problem which is faced by a lot of patients who undergo laser eye surgeries. Due to the surgery, the eye is not able to produce sufficient tears to keep the eyes moist. Dry eye can cause poor visual quality. Dry eye after the surgery is normally a permanent side-effect of this surgery.
• Corneal Ectasia: Some laser eye surgeries have led to fluid build-up in the eye. This fluid build-up is called corneal ectasia. To correct this condition, a corneal transplant may be required in some cases.
• Vision Loss: There have been cases of vision loss due to laser eye surgery. This condition cannot be corrected by any other surgery, glasses or contact lenses.
• Under-treatment: Rarely has the laser surgery achieved 20/20 vision. Often, it is under-treatment, due to which the patient has to undergo additional treatment, or the patient has to continue using contact lenses or glasses.
• Debilitating Visual Symptoms: One of the laser surgery risks is that the person develops double vision, blurred vision, halos or glares. The vision chart shows that the patient has good vision, but in reality the person is not able to see well in low light contrast, at night or in the fog. Very often, the patient is unable to drive during the night due to the night glare.
• Infection: Some cases of infection have been observed after laser eye surgery.
• Incomplete Surgery: Due to complications with the laser machinery, at times the procedure is left incomplete.
• Vision Problem Reappears: In some patients, it has been noticed that the effects of the surgery are not lasting and the problem with it reappears. In such a case, repeat laser eye surgery is required.
• Decreased Vision: Some patients have noticed that their vision prior to the surgery was better than the vision post-surgery.
• Changed Dynamics of the Cornea: The laser eye surgery changes the dynamics of the cornea. Due to this, in case of glaucoma or cataract surgery, it is difficult to measure the exact intra-ocular pressure.
• Retinal Detachment: Some cases of retinal detachment have also been observed after the laser eye surgery.

Many people in the age group of 40 to 50 are considering laser eye treatment. But before they go in for surgery, it is necessary to evaluate whether cataract or glaucoma are not the reason behind the vision problems. At the same time, it is important not to ignore the laser eye surgery risks.

Lasik (Laser-Assisted-In-Situ Keratomileusis) is currently one of the most frequently performed elective procedures in North America. It is a highly effective outpatient procedure that is suitable for most low, moderate and higher prescriptions. LASIK uses a cool beam of light from the excimer laser to gently reshape the front surface (cornea) of your eye.

Lasik procedure:
1. The LASIK Procedure Anesthetic drops are applied to the eye.
2. A protective flap is created and gently lifted by the surgeon, revealing the inner corneal tissue.
3. Computer-controlled pulses of cool laser light are applied to the inner layers of your cornea. As the laser pulses, it makes a ticking sound. The inner corneal layer is reshaped with the laser to mimic your contact lens or glasses prescription.
4. The surgeon gently replaces the flap and aligns it to its original position. It heals naturally and securely.
5. Some patients may feel slight irritation for a few hours, but most are quite comfortable after a nap and rest.