Lasik Surgery Blog

In order to understand the effectiveness of wavefront-guided LASIK, we must first have a quick roundup on the natural imperfections of the eye. The cornea and the crystalline lens are not perfect, and light rays passing through the eye are subject to being distorted due to these imperfections. These distortions are termed as aberrations , which are categorized as lower order and higher order aberrations.

Lower order aberrations constitute a major chunk (90% or more) of these aberrations, and lead to the more prevalent refractive errors, such as farsightedness, nearsightedness and astigmatism. These vision anomalies can be compensated for by corrective eyeglasses and contact lenses, or can be treated through conventional surgical procedures like PRK, LASIK or LASEK. However, the remaining 10% optical aberrations, also known as higher order aberrations, give birth to anomalies that cannot be cured via conventional LASIK.

Such a scenario necessitates the use of wavefront-guided LASIK.

Since higher order aberrations are entirely unique to a particular patient, much like fingerprints, a wavefront analysis system (known as an Aberrometer) is used to measure these aberrations. The Aberrometer is digitally interfaced with a sophisticated, computer controlled laser, which is directed in a precise manner over the cornea. In essence, the laser custom sculpts the cornea a completely customized reshaping of the corneal surface.

The procedure employed by the wavefront analyzer to measure higher order aberrations would appear quite complex to a layman.

At first, a ray of light is passed through the eye and is reflected off the retina as an outgoing wavefront. This wavefront is compared against a planar wavefront, in order to determine both lower and higher order aberrations. These aberrations are displayed on a monitor screen in the form of precise 3D images. This information is then used for a custom ablation of the cornea, with the aid of an excimer laser eye surgery system interfaced with the Aberrometer.

On the whole, the conventional LASIK procedure would suffice for the treatment of common lower order aberrations, such as myopia, hypermetropia and astigmatism.

However, higher order visual defects normally call for a much advanced surgical procedure like wavefront-guided LASIK.

If you find a LASIK doctor that you are confident about you will be able to get more information about wavefront guided LASIK.

About the Author :

Nicola publishes articles, reports, news, views and information about LASIK surgery problems at http://www.Your-LASIK.info. LASIK Surgeons Directory http://www.find-lasik-surgeon.com is a useful resource. This article may be reprinted in full so long as the resource box and the live links are included intact. Copyright http://Your-LASIK.info

This article is distributed by: www.iSnare.com
TechTags Plugin [ lasik surgery | lasik surgery locations | lasik surgery costs | lasik surgery faq | lasic surgery | lasik surgery forum | lasik surgery eye | lasik eye surgery | lasik surgery information | lasik surgery doctors | lasic surgery clinics ]

Does wearing spectacles or contact lenses seem cumbersome to you? Are you considering LASIK eye surgery one of the most prevalent and successful refractive surgery techniques? I suggest you hold your horses and rather request the valuable assistance of an expert surgeon, since LASIK eye surgery is not for everyone. Read on to see whether you are a potential candidate for LASIK surgery.

An important aspect to bear in mind while considering LASIK surgery is the patient s age. Since the vision typically experiences a continuous change until the age of 18, you must be at least 18 years old (21 for some laser ablations) to undergo LASIK. Furthermore, if you are myopic, you should defer LASIK awaiting your refraction to stabilize, since myopia may continue to increase until a patient s mid to late 20s.

Pregnant or nursing mothers are advised against undergoing LASIK, though they might go for LASIK at a later stage in life. Also, you must not be taking certain prescription drugs, such as oral prednisone or Accutane. To be a potential LASIK candidate, your eyes must be healthy with a stabilized refraction. Moreover, LASIK is typically not recommended for patients with herpes infections of the eye, diabetes, lupus, rheumatoid arthritis, glaucoma, or cataracts.

LASIK is not a panacea for all vision anomalies. You must have realistic expectations while you consider LASIK eye surgery. Consult your surgeon to check out if you are a potential candidate for monovision. LASIK can be used to impart monovision, that is, one eye corrected for near vision and the other for distant vision. The crucial aspect is to adjust to this particular type of vision correction. If you can do the same, your dependency on eyeglasses or contact lenses may be eliminated.

It is imperative that you discern whether you are a potential candidate for LASIK surgery or not. You must weigh the pros and cons before undergoing surgery. If you are happy wearing contact lenses or eyeglasses in order to compensate for the refractive error, and you certainly don t believe that wearing eyeglasses cramps your style, then you could very well forego LASIK surgery. After all, LASIK is a surgical procedure and hence it s bound to have associated risks and complications.

A local opthalmologist or LASIK practitioner will be able to help you further.

About the Author :

Nicola publishes articles and reports and provides news, views and information about LASIK surgeons at http://www.Your-LASIK.info. The LASIK Surgeons Directory http://www.find-lasik-surgeon.com is a useful resource. This article may be reprinted in full so long as the resource box and the live links are included intact.

This article is distributed by: www.iSnare.com
TechTags Plugin [ lasik surgery | lasik surgery locations | lasik surgery costs | lasik surgery faq | lasic surgery | lasik surgery forum | lasik surgery eye | lasik eye surgery | lasik surgery information | lasik surgery doctors | lasic surgery clinics ]

Many people in life would like to gain more confidence or to increase their self esteem. In this article, I give free tips on how to do this. I myself have managed to change my whole life by implementing the advice given. I hope it also proves beneficial for you.

I am Stephen Hill from England. I had many issues as I grew up from a child, through the teenage years, and finally to adulthood which had a damaging affect on my confidence levels. These included:

A bald patch on my head

A speech impediment known as a stutter

A weight problem, I was basically too fat

I am quite short at five foot four

Certain people I met would be quite nasty and would try to make fun of me. They would succeed as I would be very hurt from their comments, even though I tried to never show it.

These people were making my life a misery and by the age of twenty-two I had had enough. I decided I needed a big change in attitude and started to read books about life and about positive thinking etc.

These were the things I had to take on board:

It is not important what other people think of you, it is what you think that counts

You need to start to like yourself

There are various things about your person, you do not like but which you can not change. You therefore have to start accepting these things and realising that maybe there are other people in life who are more unfortunate than you.

You need to have respect for yourself

Do not accept second best in life

Be happy

I tried hard to implement this advice and even though it was not easy to change, I knew I had to. I basically live life to the full now and try not to worry about anything trivial.

About the author:

Stephen Hill has a number of websites including:

stuttering therapy

lasik laser treatment

lasik surgery
TechTags Plugin [ lasik surgery | lasik surgery locations | lasik surgery costs | lasik surgery faq | lasic surgery | lasik surgery forum | lasik surgery eye | lasik eye surgery | lasik surgery information | lasik surgery doctors | lasic surgery clinics ]