Posts Tagged ‘corneal flap’

How to Relieve Dry Eye Caused By Lasik Surgery

Dry eye is a common eye problem, and there are many causes of dry eyes, one of which is the postoperative side effect of Lasik surgery. In normal circumstances, Lasik surgery, some studies show that, is one of the main causes of dry eye, although sometimes certain people seem to experience no dry eye symptoms.

Reasons why Lasik surgery leads to dry eye are as follows. In the process of a Lasik procedure, there must be a corneal flap created by either a steel blade or a laser, during which the corneal tissue and corneal nerves are supposed to be broken up. What is more, the following reshaping of corneal by laser will come to further disrupt the nerve tissue. If the patient suffer from a comparatively more seriously eyesight problem, the nerve tissue is thought to be cut deeper, which does more side effect to eyes. Then due to the whole disruption, the nerve tissue, when recovering and regenerating, is normally hard to produce tears to keep eyes moistened. Thus dry eye symptoms emerge.

( What is more, for supplement only, whether the corneal surface and tear lay are created to be qualified or smooth is closely related to another eyesight problem of “ghosting” and “fuzziness”, as when light comes into eyes, it meet with the tear layer at the very first. If the corneal surface or tear layer is of irregularity and deficiency, visual acuity will be greatly affected.)

As a surgeon, considering the possible side effects of dry eyes, and ghosting or fuzziness images creation, I advise several ways to minimize those possibilities after operation: have an overall examination concerning eyes, including the evaluation of preexisting dry problems; apply the Intralase FS lasers, but not the steel razor blade microkeratome to create the corneal flap, which is believed to be more able to minimize unsmooth and unqualified corneal surface and tear layer; after the surgery, use artificial tears and gel lubricants for a series of days. Those who do not have the experience of dry eyes after lasik surgery are also suggested to. The cyclosporine 0.05% eye drops (Restasis) are recommended.

It has been researched that the above regimens are able to relieve dry eyes, as well as other eye problem after Lasik surgery. By persisting in the regimens, improvement of eyesight, but also the prevention from secondary side effects can be guaranteed. Besides, get more information of Lasik surgery in advance is also helpful to enhance the outcomes.

more info

·Dry eye causes and treatments

·Flaxseed oil for dry eye treatment

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Potential Lasik Complications Can Arise From Laser Eye Surgery

Laser eye surgery has arrive a long way from the early days of the treatment. But regardless of a large deal of think about being taken by surgeries to make it a protected method, difficulties can still arise.

The most general type of laser eye surgery is LASIK, but all types are voted for out by a laser which reshapes the cornea and eliminates some corneal tissue to change the focussing power of the eye.

People must take probable complications into consideration and make an acquainted conclusion about whether to get laser eye surgery.

Major Complications asoociated with Laser Eye Surgery Flap Damage or Loss

Instead of conceiving a hinged flap of tissue on the centered cornea, the whole flap could arrive off. If this were to happen it could be restored after the laser treatment. However, there is a risk that the flap could be impaired or lost.

Distorted Flap

Irregular healing of the corneal flap could conceive a garbled corneal form, producing in a decline of best-corrected vision. It should be documented that whereas difficulties of laser eye surgery are uncommon your surgeon should announce you about them former to treatment

Double Vision

Two images emerge when looking through one eye at a time.

Time Glare

Headlight glare when going by car at night.

Night Myopia

This is a inclination for eyes to become more nearsighted at evening, premier to blurry vision. This can be amended by wearing crystal with minus lenses in the dark

Halos and starbursts

This happens when the student enlarges after the treated locality at nighttime.

Vision Blurring

This is when images emerge blurrier after the refractive surgery than before.

Flap Melt

The flap starts to disintegrate and may need surgical intervention.

Flap Dislocation

This is a status in which the corneal flap is not in correct alignment in the corneal bed. This is treated with surgical intervention.

Flap Wrinkles

A foremost or secondary flap dislocation makes flap wrinkles. This is treated with surgical intervention. This is all about complications associated with Laser Eye Surgery. Hope this will help you a lot. Cheers!

Andrew White is a eye care assistant and an expert on eye cure and care, laser eye surgery, lasik eye surgery and other types of eye surgeries. For more information on how to get rid of eye problems visit our website.

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Lasik eye surgery

LASIK stands for Laser in situ Keratomileusis and it is a treatment that reshapes the cornea in order to produce clear vision. The LASIK refractive eye surgery procedure can treat myopia (nearsightedness), hyperopia (farsightedness or longsightedness) often when the eyeball is too short or when the lens cannot become round enough, and astigmatism (a common condition where the cornea is not perfectly spherical, can be treated with eyeglasses, contact lenses, or laser eye surgery).

If you are interested in LASIK, an eye surgeon or ophthalmologist can determine. Here I foundef  Free Lasik Evaluation

LASIK can be very successful when performed on the right patients, but it is not for everyone, LASIK patients should be at least 18 years old, demonstrate no change in refraction for at least one year, and have realistic expectations regarding the results of LASIK eye surgery. Patients who have experienced an eye infection or injury in the past year should not undergo LASIK. Have sufficient corneal thickness (the cornea is the trans-parent front part of the eye). A LASIK patient should have a cornea that is thick enough to allow the surgeon to safe-ly create a clean corneal flap of appropriate depth. The average LASIK surgery costs $499 to $2,500 per eye. Patients may pay for LASIK costs with cash, check, or credit card. Many doctors also offer LASIK financing to help cover the LASIK surgery cost.

LASIK is usually safe, the success rate for LASIK averages above 95 percent for most experienced LASIK surgeons. The LASIK procedure is typically near-painless because of the minimal amount of tissue affected.

Stacy is professional researcher and now a days doing research on medical education in USA. she is co-author and administrator of Medical Schools Sacramento: an informative blog about medical institutions of Sacramento

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The process of Lasik surgery

As one of the laser vision correction surgeries, Lasik is now commonly applied to address some vision problems. Lasik can always provide a high success rate. What’s the most significant, vision correction from Lasik is permanent so that eyeglasses or contact lenses can be eliminated after the surgery. Most people are attracted by this benefit from Lasik. However, they may not be clear of the detailed process of the surgery.

A lot of factors play a role during a Lasik procedure, including the exact vision problem, skills and experience of the surgeon. The time of the process may slightly vary from one surgeon to another. But Lasik typically costs only five minutes. Before performing the procedure, the surgeon will apply a moderate sedative to the patients on an oral basis.

In addition, the patient will be given anesthetizing eye drops. In this way, no infliction will occur in the patient during the procedure. Only one eye will be treated at a time. The doctor will ask the patient to lie down on the operating table and set the eye below the laser. During the procedure, the eyelids should be kept open, because the surgeon needs to cut a corneal flap.

Before cutting the flap, the surgeon will mark the cornea in order to figure out the flap to be cut. This flap will be marked using an ink marker. The flap is actually very thin on the top of the eye. After the creation of the flap, a laser will be used to reshape the corneal surface.

The laser used to reshape the cornea should be precisely guided by a special computer, which aligns the laser to the exact prescription of the patient. In addition, a microscope is used to monitor the motions of the eye, which stares at a target light during the procedure.

It is quite necessary for a patient to ask someone else to drive him home. The other eye should be treated with another Lasik after a few days.

More related articles:

·A comparison between 30-day contact lenses and LASIK


Firmoo.com is the emerging online optical store selling high quality eyewear, such as prescription eyeglasses (single vision myopic glasses, reading glasses, bifocal and progressive eyeglasses etc.,), prescription sunglasses (with RX tinted lenses), prescription sports goggles. Firmoo guarantees lowest possible price in the market. Firmoo’s return and refund policy makes any purchase risk-free ones.

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The Five Most Important Improvements in LASIK Since it was Invented

There have been five major advances in LASIK since it was first invented:

1. The use of eye trackers – The first LASIK procedures required the patient to fixate on a light and that was what was used to center the treatment. The invention of eye tracker technology allows the laser to be programmed to define the location of the pupil and when the treatment is started even if the eye moves, the laser stays centered on the pupil which gives treatments that are correctly centered over the optical portion of the eye.

2. Small spot scanning lasers – The first lasers and ones still in use today use a “broad beam” where the treatment laser beam is as large as the optical zone being treated and astigmatism is corrected by varying the shape of this beam. Although this is effective, there are limitations to the types of shapes that can be created, and the quality of the ablation is limited to the quality of the laser beam. Newer lasers use small scanning spots to shape the front of the eye, and with much lower energy per laser pulse.

3. Wavefront optimized ablations – Originally LASIK was done with a mathematical model to flatten the center of the cornea to correct the refractive error. It was learned that this creates halos, glare, and other optical aberrations that are unwanted, especially in patients with larger pupils. The newer lasers can correct the refractive error but maintain a more natural or prolate shape due to more advanced algorithms for the correction.

4. All laser LASIK – All laser LASIK was initially done using a microkeratome that employs a disposable razor blade to cut the corneal flap, which is the first step in traditional LASIK. By using a femtosecond laser, Intralase, and then others were able to create a flap using a laser which is safer, more predictable, and gives more reproducible results. The razor portion is still used by many centers today, but is the cause of most of the risks of the LASIK procedure.

5. Thin flap LASIK – Initially all LASIK was done with a flap of about 180 microns. This is about 20% of the thickness of the structural cornea (the epithelial skin not counted) in most cases and the thickness was unpredictable due to use of the blade (see reason 4 above). Sometimes the flap was over 200 microns. This can weaken the cornea and lead to complications. The all laser method can make thinner flaps, and over time doctors have moved to “thin flap LASIK” with flaps of about 100 microns and in some cases 90 microns which is half as thick as the original flaps.

BONUS IMPROVEMENT: Although not technically a change in Denver LASIK itself, the diagnostic capabilities have improved since the early days of LASIK making the imaging of the cornea more robust with technologies such as OCT, Wavefront analysis, and posterior surface topography. All of these changes have contributed to making an improvement in LASIK.  Recently we have begun to look at corneal hysteresis (CH) which is a measure of corneal strength.

Dr. Dishler is the first doctor to perform LASIK in Colorado, the first doctor to offer blade free LASIK in Colorado, and is a consultant, lecturer, and inventor. He is involved with several FDA studies and answers questions related to laser vision correction online.

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