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Lasik Surgery Articles, Tips and Information

lasik eye surgery Example Title

Often times you haven't even done anything to get buggered eyes. By that I mean you haven't actually personally damaged them to the point of needing visual aid. If you're like many you were just born with buggered eyes, and have had to deal with the hassles of glasses or contacts for a time that is too long to remember.

The first form of Lasik surgery was in 1970, when Dr Jose Barraquer, made it possible by developing the first microkeratome.

Is it worth it?

The hassle. That is the question that you should be asking yourself. Contacts came and made it more convenient, but what now? Eye surgery! Eye surgery has been around for several years now, and it's amazing at how many people are still skeptical about it.

 

What is Lasik Eye Surgery?

Good Question - Glad you asked. Lasik is an acronym that stands for Laser-assisted In Situ Keratomileusis. It's a procedure in which a laser is used to correct the shape of the eye, an as a result to correct the vision of the patient.

 

The microkeratome is used to cut thin flaps in the cornea and alter its shape, in a procedure called keratomileusis. Building off the work of DR Barraquer Dr. Lucio Buratto in 1990 & Dr. Ioannis Pallikaris took the technique and made it widely effective and safe.

 

With the long history that is behind the surgery, there is not a need to be skeptical. I would recommend talking to your eye doctor, to gain more advice on the surgery and to see when and if it's right for you. Good luck, happy sight!

 

Ryan Fyfe is the owner and operator of Cheap Lasik Eye Surgery Info - http://www.cheap-lasik-eye-surgery-info.com, which is the best site on the internet for all lasik eye surgery related information.

 

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Defining LASIK Eye Surgery - How It Works

 

LASIK eye surgery is a refractive surgery intended to reduce a patient's dependency on eyeglasses or contact lenses. LASIK is the most prevalent of all refractive surgery types. LASIK aims to reshape the cornea in order to allow for accurate refraction, which results in the light rays falling exactly on the retina (a series of light sensing cells). This enables crystal clear vision.

 

In general, common refractive errors, such as nearsightedness, farsightedness and astigmatism are caused due to the irregularities of the corneal surface. These anomalies can be corrected by reshaping the cornea. LASIK procedure makes use of an advanced laser called excimer, which is an ultraviolet chemical laser. The laser is controlled by sophisticated computer software. The computer-controlled sensors measure the eye position a few thousand times per second, and then redirect the laser to make precise incisions in the cornea. The reshaped cornea allows for the desired refraction and therefore results in enhanced visual acuity.

 

The flap is then folded back so as to act as a natural bandage. The cornea may take a few days to heal. During this period, the patient may experience blurry vision and certain minor side-effects like halos or glare. However, these complications normally subside within a few days or weeks, when the cornea has completely healed.

 

Other common types of surgery, apart from traditional LASIK, are photorefractive keratectomy (PRK), radial keratotomy (RK), and LASEK. There is also a rather new procedure and it can be considered as an enhancement of the traditional LASIK procedure. It is called custom LASIK or wavefront-guided LASIK. It is a more advanced procedure and is capable of treating other vision impairments as well, apart from the common vision disorders specified above.

 

Nicola Kennedy publishes articles and reports and provides news, views and information about LASIK eye surgery at Your Lasik Information. The LASIK Surgeons Directory will help you find a LASIK doctor.

 

What Happens Before, During, And After A Lasik Eye Surgery Procedure?

 

Since LASIK was approved by the FDA in the early 1990's, the procedure has grown to become the most widely-performed eye surgery in the United States. LASIK is a surgical procedure performed on the eye to correct an individual's vision and reduce dependency on eyeglasses or contact lenses. LASIK stands for Laser-Assisted In-Situ Keratomileusis, which literally means to "reshape the cornea from within using a laser." The procedure has broad applications to treat refractive errors of the eye and can be used to treat myopia (nearsightedness), hyperopia (farsightedness), and astigmatism (an elongated cornea).

 

Conventional LASIK procedure makes use of a microkeratome, a diminutive surgical blade, to cut a flap in the corneal surface. However, variations of the traditional LASIK procedure may employ a laser to accomplish the same. Whatever may be the procedure to cut the flap, after it's done, the excimer laser is used for precise ablation of the stroma - the middle layer of the cornea.

 

LASIK works by improving the ability of the eye to properly focus light. In a perfectly formed eye light entering the eye bends and directly hits retina, allowing the eye to produce a clear image. The majority of people, though, have imperfectly shaped corneas. Imperfectly shaped corneas do not properly refract the light on the retina, with the result that the viewed image is blurry and distorted. LASIK can correct these refractive errors by permanently changing the shape of the cornea. Once reshaped, the cornea is able to better focus light, eliminating the need for glasses or contacts.

 

LASIK patients will be given a detailed set of instructions to follow, beginning a few weeks before the procedure is to take place. It is critical that these instructions are followed if the surgery is to be a success. Patients wearing contact lenses will be advised to stop wearing their lenses anywhere from 2-4 weeks before the procedure, to give their eyes a chance to resume their natural shape. Certain foods, vitamins, beauty products, and medication can also affect the health of your eyes and may need to be avoided prior to LASIK. Failure to follow pre-operative instructions may result in a failed LASIK procedure, or the need to completely redo the surgery.

 

Patients remain awake and alert during surgery, although the doctor may administer a mild sedative to help keep the patient calm and relaxed. Numbing eye drops will be applied to the eye to serve as a local anesthetic. Since the eye's natural tendency is to blink when it comes into contact with foreign items, it is necessary to secure the eyelids to keep them out of the way of the laser. This is done using an instrument called a lid speculum. Once the speculum is in place and the eye is cleaned, a small ring is placed on the cornea to apply a strong suction to the cornea. This part of the procedure can be a bit uncomfortable, but the strong suction ensures that the eyes remain immobile throughout the rest of the surgery.

 

Next a flap is cut into the cornea, leaving a small hinge to keep it attached to the eye. This flap may be made using a small razor sharp knife called a microkeratome, or by using a laser - also called IntraLase. The suction ring serves as a precise guide for the microkeratome to ensure that the flap is made cleanly and accurately. After the cut has been made the suction ring is removed and the flap is gently teased away from the cornea and peeled back (towards the hinge) to reveal the underlying stroma.

 

The doctor will then dry the eye and ask the patient to stare at a fixed light, without moving, until the end of the procedure. Once the eye is in the proper position, the excimer laser will be activated. The surgeon will have already programmed the laser to remove the precise amount of tissue from the exact location(s) on your eye before the start of the procedure. More severe refractive errors will require a longer laser treatment, since more corneal tissue will need to be removed. As the laser pulses a beam of light into the eye to remove the excess tissue from the eye, the patient will hear a ticking or zapping sound and may smell an odor similar to that of burning hair. Once the laser has ceased pulsing, the surgeon will replace the corneal flap on the eye and smooth it out to ensure no surface wrinkles develop.

 

Since an eye is vulnerable after LASIK, it is very important to take extra precautions to protect the eye during the healing process. The doctor will give the patient an eye shield to wear immediately after the LASIK procedure. This shield should be worn while sleeping to prevent a person from rubbing their eye and dislodging the flap. The eye shield also prevents a person from inadvertently putting any pressure on the eye. Antibiotic ointment should be used to prevent infection from forming, while eye drops may be used to keep dry and scratchy eyes well-lubricated as they heal.

 

The doctor will make a follow-up appointment to evaluate the patient's eyes within 24-48 hours from the time of surgery. This will allow the physician to monitor the healing process, evaluate the eyes for any potential problems, and begin accessing the success of the LASIK procedure. After the initial follow-up appointment, the patient will be asked to return for regular visits every few weeks, then every few months, until such time that the surgeon is confident that the procedure was successful.

 

Keep in mind that LASIK is not a risk-free procedure and that not all individuals are good candidates for LASIK. If you are interested in finding more about this procedure, contact your ophthalmologist and request an appointment.

 

Gray Rollins is a featured writer for MyEyeSurgery.com. To learn more about LASIK eye surgery and LASIK eye surgeons, visit us.

 

Lasik Eye Surgery Can Give A New Lease On Life

Going through life dependent on glasses or contacts is fine for some, but others quickly tire of being unable to navigate the world if their corrective lenses get misplaced or break. There are few greater feelings of helplessness then that felt by a person who suddenly cannot see a foot beyond the end of their nose. These people often turn to eye Lasik surgery to help bring their world back into focus.

No matter how you crack it, eye surgery does sound a little scary, but for anyone who has studied the results, the fear factor is easily overcome. A person who undergoes Lasik successfully will soon find they are able to see things better than they have in years or even better than they ever did. A new sense of freedom is born and self-confidence and self-esteem boosts are incredible.

 

But what is Lasik and how does it work? In a nutshell, this surgical procedure to correct vision involves the reshaping of the cornea, which is the covering on the front of the eye. A laser and a knife are used to cut a small flap in the cornea, a hinge is left at an end of the flap and the flap is folded back to uncover the stroma, or middle section of the cornea. The laser, which is computer controlled, basically vaporizes a portion of the stroma and the flap is put back.

 

While this might sound horrific, the procedure makes sense. The cornea itself is the part of the eye that focuses light and creates a picture on the retina. It works sort of like a camera lens does to focus light on film. When light is bent and focused, it's called refraction.

When people have difficulty seeing, generally it is because the shape of the cornea and the eye are not in perfect synch. This means the picture on the retina will be blurred or distorted. This is called a refractive error, for which there are three main types: myopia, hyperopia and astigmatism. People with myopia are nearsighted, this means they can't see objects that are far away with ease. Hyperopia is farsightedness and an astigmatism is a distortion of the image.

 

Lasik surgery basically corrects these conditions and helps people focus better, often removing the need for corrective lenses entirely. Lasik is not for all people, however, and pre-exams will be required for a doctor to determine if the eye procedure will work in an individual case. If Lasik is the chosen route to help correct vision problems, those who undergo it will find it has a pretty high success rate. Although doctors cannot guarantee results, many find they end up with 20/20 vision after the procedure.

 

The other benefit of Lasik is that it's relatively painless and the surgical site heals very quickly. Most patients can see quite well right after the procedure and within a week vision should be completely in focus. Lasik eye surgery is a route more than worth investigating for those who no longer wish to be dependant on contacts or glasses. The freedom provided is amazing and the vision improvements in successful cases are also impressive.

 

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Wavefront Lasik Makes Splash In Eye Surgery

 

Did you know that traditional eye examinations are designed to detect just two corneal abnormalities - cylindrical and spherical? A cylindrical corneal abnormality results in astigmatism, while a spherical abnormality results in myopia and hyperopia (near sightedness and farsightedness).

 

Eye surgeons now have available a new technology that makes vision correction more precise. It's called "wavefront".

To correct poor vision Lasik eye surgery has become the popular choice. Lasik surgery links the condition of the patient's visual system to the Lasik laser for correction.

 

The incisions performed on the cornea of the eye are customized to the patient's individual needs. Accurate data concerning the condition of the patient's eyes is all important. The better the data collected on the condition of the eyes the better the result of the surgery. Wavefront technology as become the most promising method for collecting this necessary information. Wavefront technology is a technology that is capable of measuring refraction at multiple points on the eye as light is reflected upon it. This creates a "map" of the patient's eye. Because each eye is unique the data from each eye must be carefully analyzed so that the Lasik laser maybe properly programmed.

 

Conditions within the cornea of every eye affect refraction. Some of these refractions are considered higher-order aberrations, which have been traditionally associated with irregular astigmatism. The ability to treat these aberrations can result in an improved outcome after Lasik surgery. This can increase the possibility of achieving 20/20 vision, or better.

 

The most common procedure is to use lasers to reshape the corneal tissue. Laser Assisted In-Situ Keratomileusis (LASIK) is the most commonly performed refractive surgery procedure. Especially recommended for treating nearsightedness, it consists of cutting a flap in the cornea in order to carve the tissue underneath and give it the desired shape.

 

Clinical trials using wavelength technology have shown that nearly 80% of Lasik eye surgery patients undergoing custom surgery achieved 20/20 vision. This is a higher number than those who underwent traditional Lasik surgery. Another benefit of wavefront is in determining which patients are not candidates for Lasik surgery. Lasik surgery can actually exacerbate existing visual problems for some people

 

Wavefront technology can detect an infinite number of aberrations by using a fixation target along with an input laser beam. A wavefront sensor is used to measure the slope of the wavefront as it exits the eye. Then software determines the exact targets and dimensions of needed incisions.

 

When the laser light beam enters the eye, it produces a flat wavefront. In the perfect eye, a wavefront that is still completely flat will reflect back. In reality this beam of light will travel through a crystalline lens that is imperfect. The light then goes through an irregular cornea and other parts of the eye. All of this in combination causes the wavefront beam to become irregular; this provides the valuable data that determines the present shape of the cornea.

 

After wavefront is used to evaluate and diagnose existing aberrations in the eye, it is used to create the exact procedure for reshaping the cornea. Wavefront technology is not new. It has been around for quite some time, but only recently has it been used to aid in the correction of human vision. Did you know that wavefront has been used for years by astronomers? Wavefront is used for adjusting the optics in their telescopes. When the reflecting mirror inside a telescope becomes deformed (as the cornea of an eye) it can be adjusted using wavefront data. The data resulting from wavefront technology is used to remove aberrations. In astronomy the Earth's atmosphere must be eliminated just like removing the aberrations found with astigmatism in the eye.

 

The bottom line: Wavefront technology is an advanced method for creating precise and individualized prescriptions for Lasik eye surgery patients. With wavefront, patients are more likely to have a successful Lasik experience.

 

Mark Walters recommends that you learn more about Lasik Surgery Here

Refractive Eye Surgery - Is LASIK the Best Option?

Refractive surgery is a general term referring to the collection of many different surgical procedures, all with the key intent to fix the refractive error of the eye. Refractive surgery is the preferred treatment for rectifying a variety of vision impairments. Its popularity is owing to the fact that it produces efficacious and predictable vision improvement without any major side effects.

 

Essentially speaking, refractive surgery is any eye surgery employed to improve visual acuity and decrease dependency on glasses or contact lenses. The refractive surgery field encompasses operative procedures for all types of refractive errors, be it myopia, hypermetropia, astigmatism or presbyopia.

 

The eye surgeon may either use a microkeratome (a precision surgical instrument) or a laser to cut a flap of the corneal tissue. Then onwards, the underneath tissue is reshaped with the aid of the excimer laser (a high-precision ultraviolet chemical laser). Other refractive surgery procedures include Laser Assisted Sub-Epithelium Keratomileusis (LASEK), EPI-LASIK, Photorefractive keratectomy (PRK), Radial keratotomy (RK) and arcuate keratotomy (AK), among others. Cataract extraction and intraocular lens implants may also be considered as types of refractive surgeries, since the key intent is to extract the lens with a refractive error and replace it with a new lens that provides clear and improved vision.

 

As of now, LASIK is a clear winner among the available eye corrective surgical procedures. All the above listed refractive surgery procedures have potential complications. However, LASIK has a minimal complication rate of a mere 5%. With the technology in hand and with proper pre-operative examination, your laser eye surgery would go as smooth as a walk in the park.

 

The LASIK Surgeons Directory will help you find a LASIK surgeon. Nicola Kennedy publishes articles and reports and provides news and information about LASIK and refractive surgery at Your Lasik Information.

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