Laser Eye Surgery

Gordon Gould

There are eye care instruments that can be used at home as well as in a doctors office. Some of these instruments are, refractors, pressure gauges, and glasses.

Most patients return to work within one to three days after the procedure, although visual recovery from PRK may take as long as four weeks.

After having Lasik done, patients should not take part in any exercise or sports that may lead to an eye trauma for at least two months, unless they are using eye protection. Protecting your eye is necessary for sports such as tennis or contact sports (football, basketball etc.) where there is a great risk of being hit in the eye. You should ask your surgeon about your sports activities or exercise schedule, but in most cases Lasik patients can resume non-contact sports and exercise activities one week after the surgery.

Fortunately for most people, LASIK only needs to be done once. It can be repeated a second time if there is adequate corneal tissue remaining which needs to be determined for each case. Rarely, it can be done a third time but this can have increased risks.

Although you should always use goggles for your eyes when using a tanning machine or sunglasses if you're out in the sun, it's best to give your eyes a good rest for a few days or until the surgeon tells you otherwise. Many people don't realize what a delicate procedure Lasik eye surgery or any eye surgery is. Your eyes are everything so look after them and nix the tanning for a few days. If you are out in the sun, put those sunglasses on!

With fast excimer laser like Wave Light Eye Q 400, the laser treatment time is just 2 second per dioptre. However other machines are bit slow. The whole procedure is less than 5 minutes per eye

"Potential side effects to corrective eye surgery include discomfort 24-48 hours post surgery, glare, seeing halos around images, difficulty driving at night,fluctuation in vision,and dry eyes.Due to the complexity of corrective eye surgery, all changes done to the cornea are irreversible, that is to say they can only be altered with another surgical procedure."

Patients will need someone to drive them home after their surgery. They should continue to avoid aspirin and other non-steroidal anti-inflammatory agents for an additional three days, but they can take acetaminophen.

Some of the risks of lasik eye surgery: over- or under-treatment the inability to wear contact lenses permanent loss of vision reduction in the quality of vision including the development of glare, halos, and starbursts difficulty with night-driving reduced vision in dim lighting conditions. I'm not sure of the exact statistics, but I think it's less than 1% of people who have serious complications. Upwards of 5% of people have less serious complications, the most common of which can be treated. New World iCare offers a LASIK surgery center with ALLEGRETTO WAVE Eye-Q, a 400 Hz ablation rate makes the Eye-Q one of the fastest lasers in the world and its unique PerfectPulse Technology ensures safety and accuracy in combination with outstanding visual results. For added safety, the laser has an extremely fast eye tracker that can respond to any eye movement in just six milliseconds. Previously, only lower-order aberrations (such as nearsightedness, farsightedness, and astigmatism) could be measured and treated either with Glasses, Contacts or Conventional LASIK treatments. Higher-order aberrations, which often linked to the visual glare and halos that cause night vision problems, earlier could not be corrected and that continued to affect quality of vision. With the advent of Wavefront technology and Customized LASIK, however, New World iCare in Mumbai, India have the diagnostic tools to measure 22,000 unique points along the optical pathway to determine and ultimately correct both lower-order and higher-order aberrations. Using the precision provided by the WavePrint map, Customized LASIK has the potential not only to correct how much you see, but also how well you see. Allegretto WaveLight technology also features a unique approach to corneal sculpting. The normal curvature of a healthy cornea is prolate or higher in the center. Most laser systems flatten centrally to create an oblate cornea. This oblate shape causes spherical aberration, which degrades the quality of vision, especially at night, and often produces glare or halos. The Allegretto laser not only treats the cornea centrally, but also peripherally. The laser uses proprietary monograms to adjust the asphericity of the cornea to perform a prolate ablation based on the anterior curvature readings. This prolate curvature, in part, accounts for the excellent quality of vision during the day and night.

"The cost of Lasik can vary from between under $1000 and over $3000 per eye depending on the surgeon, the city, and the amount of work/difficulty of the work. In general, the better surgeons require a higher price but are well worth it."

so you dont have to wear contacts of glasses, it fixes your eye cornia

It's basically a method of altering the eyes' structure in order to make you less dependent on glasses or contact lenses. I heard that you can even get 20/20 vision after an operation, but naturally it varies from patient to patient. In medicine most things are looked into on a case-by-case basis. The eye is a fairly complicated organ, so surgical procedures may vary dependent on your condition. Laser eye surgery is being increasingly adopted by military organisations.

YOu cant, unfortunately. But I would recommend going to your eye doctor and getting coloured contacts. They are usually pretty cheap and look fantabulous! You don't even need a perscription to get coloured contacts... GOOD LUCK!

LASIK can correct a wide range of vision problems related to the need for glasses or contact lenses. Ametropia, the condition of having an eye which is out of focus can be caused by a mismatch between the cornea and the optics of the rest of the eye resulting in light not being focused properly on the back of the eye to produce a clear image.

The most frequently corrected vision problem is myopia or nearsightedness. Also correctable is farsightedness or hyperopia. Also there is a condition of assymetry of the cornea which is called astigmatism, and this can also be corrected by LASIK.

Of interest is that many patients have a combination of two of these conditions together and this can also be corrected by LASIK. Most commonly nearsightedness with astigmatism. Also there is farsightedness with astigmatism. More uncommon is what is called "mixed astigmatism" where the eye is both near and farsighted at the same time in different meridians or directions. All of these conditions can be effectively treated with LASIK.

More recently there is even the correction of irregular shapes in the cornea which are correctable by a variety of new methods of custom treatments. There is wavefront treatments based on the overall shape of the eye and topography guided treatments based on the shape of the cornea in a particular patient. Most patients do not need or derive additional benefit from these types of treatments, although wavefront "optimized" custom treatments have been found to provide better quality of vision and are widely used by advanced lasers available today.

Other eye problems and diseases are not treatable with LASIK. Included is amblyopia or a lazy eye and presbyopia or the aging eye. In addition blurry vision due to diseases such as cataracts or glaucoma are treatable but not by LASIK procedures.

For most people, if their vision is correctable with glasses or contact lenses, it will also be correctable in a more permanent way by LASIK vision correction.

Yes along with many more serious side effects including death.

LASIK is usually not covered by insurance but may be covered by your employer in a health savings plan or flexible spending account. You may also pay with pretax dollars in certain cases, and it is usually tax deductible.

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More and more surgical procedures are robotic-assisted. These robots stabilize the hand movements of surgeons when working in delicate places like the brain and for procedures that are done with microscopes, in very small places where hands and fingers don't fit or the surgeon is unable to make the tiny movements that microscopic procedures require, robotics can adjust movements by very small increments, so that movements by the surgeon are "translated" into microscopic movements.

Bladeless LASIK uses a laser instead of a razor blade to make the corneal flap which is the first step in the LASIK procedure. The razor cuts a thin layer of the cornea which is folded back to allow the second laser, and excimer laser, to reshape the eye. In the bladeless variation, there are up to millions of tiny perforations precisely made at an exact depth into the cornea that in combination results in a separation of the outer layer of the cornea.

The bladeless approach uses a more expensive laser than the blade method but it is safer, more precise, and some studies show that the results are even better.

There are two different types of lasers used in laser eye surgery. The actual vision correction of LASIK which is done under a flap, or PRK which is done on the surface of the eye after removal of the skin of the eye is an excimer laser. This is a short wave ultraviolet laser with a wavelength of 193 nm. It works by short pulses that break carbon carbon bonds on the surface of the eye. Typically this laser removes about 0.3 microns of tissue with each pulse. Therefore to remove the amount of tissue to correct most patients hundreds of pulses in the same spot are needed. Modern excimers use small laser spots of only about 1 mm in diameter and therefore to treat the area of a 6 mm treatment diameter can take thousands of laser spots. Fortunately these lasers run at a rate of from 100 to 400 Hz and can accomplish this in less than a minute. Infrared eye trackers are used to monitor the position of the eye, usually relying on the pupil or iris to track movements and to deliver the treatment in the correct location.
Another laser that is also used is the femtosecond laser which can make a corneal flap. This is an infrared wavelength laser which sends very small pulses about a micron in diameter to a specific focal point causing optical breakdown and tissue separation by that mechanism. Here the laser operates at a higher frequency so that up to millions of spots are created to separate the outer cornea from the deeper tissue, creating a flap of superficial tissue which is lifted up to allow the first laser mentioned to do the correction and then the flap is returned to its original position which can heal quickly and with minimal discomfort. This is the primary reason that LASIK is so much more popular than PRK, where in the latter case, a new skin must heal over the treated area which is uncomfortable for a few days and the visual recovery is much slower.

The risks of laser eye surgery are as followed, numbness, blindess, caterax and potential infections in in rare cases death. Speak with your doctor to get a complete list before getting surgery.

Not at all. The actual surgery process is a little uncomfortable but not painful at all. Your eyes are fully anaethatised with drops.

Immediately after surgery, your eyes will feel a little gritty and watery but this wears off after a couple of hours. It is advised you go to bed when you get home to rest your eyes and help healing.

I had Lasik last Saturday and was back at work Monday morning with 20/20 vision and no irritation.

A2: I just had lasik today at three pm and it's now 6:30pm. It's surprisingly no pain for what they do. everyone's different but for me, it's hard to keep my eyes open just to type. the doctor just called me and said to try and fall asleep. he said my vision should be perfect by 8:30 tonight. Right now though, it looks like I'm looking through Saran Wrap or something. and the drops they give you really help :}

Another answer

I had laser eye surgery because I'm borderline glaucoma. My doctor was hoping it would bring down my eye pressure but we we not successful. I would say no pain was felt but I did feel a percussion sometimes in one eye and became nauseated, my doctor had to stop for awhile, that was the only problem and not really a problem.