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Lasik is a two step procedure to correct eyesight by changing the shape of the cornea. In the first step a corneal flap is made where the outer layer of the cornea is separated and folded back to reveal the inner corneal tissue or stroma. This was initially performed using a vibrating razor blade device called a microkeratome and many are still performed today with this method. A newer method is to use a laser to separate this outer tissue layer with a type of laser called a femtosecond laser. The femtosecond laser uses very short length pulses to create a tissue plane that allows for this separation.
The second step in Lasik is the vision correction step where an excimer laser makes pulses on the exposed stromal surface of the eye to reshape the eye into the new desired shape. There are many brands of lasers which can perform this task and are roughly divided into the large beam lasers which reshape the whole cornea by changing the size and shape of the beam, and small pulse lasers which reshape by the same size tiny pulse moving in a pattern around on the cornea. Each pulse of the laser removes a precise amount of tissue by a process known at photoablation. The sum of all these pulses changes the curvature of the cornea. When the flap is replaced, the new shape transfers to the front of the eye and the vision is corrected.
One of the breakthroughs in Lasik vision correction is the use of eyetrackers which monitor and follow the eye during the treatment so that tiny eye movements do not detract from the planned correction. This is best explained in the attached link.
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Are you eligible for lasik eye surgury?
To determine if you are a candidate for LASIK eye surgery you will need to have a screening exam which can be done at minimal or no charge in most locations. If you can see well with glasses or contacts and are in general healthy you will probably be a candidate for LASIK.
Does lasik cause presbyopia?
Lasik surgery is advised around the age of 20 ; by that age, the power stabilises. After Lasik, the remaining power is given in glasses. Never expect 100% correction by Lasik. The problem of presbyopia starts around 40 and one has to wear glasses. New types of operations are now done to correct correct presbyopia.
Is Lasik Eye Surgery Safe For Eyes?
Thanks Dr. Ashok for your valuable answer. Can you suggest me where can i go for Lasik eye surgery in Chandigarh
What is the rate of scar tissue resulting from Lasik?
The actual chance of you getting scar tissue after getting the lasik surgery and it being so bad that you need more procedures done is a .5% chance of happening
Is there lasik surgery in the Philippines?
In Cebu The Cebu Doctors' Hospital in Cebu City has earned a name among celebrities for the lasik surgery practice of Dr. Yong Larrazabal. In Quezon City But if you are from Manila and your budget is entirely focused on getting a Lasik surgery done and cannot afford to be a medical tourist, you can also get Lasik surgery in St. Luke's- Vision Laser Center. For more information about this you can check it out through the related link that I've provided (Lasik Manila, Philippines).
How effective is lasik?
Lasik is a very effective eye surgery. Nearsighted or farsighted patients usually get excellent results with Lasik vision correction procedure. Progress in Lasik technology during the last years has also translated to a higher chance of obtaining 20/20 or better vision. According to available statistics, more than 90 percent of patients who have Lasik done obtain 20/40 or better vision after procedure and no longer have to use eyeglasses or contact lenses; 55 percent of patients get 20/20 or better vision after Lasik. The FDA found that complications take place in 1% to 5% of Lasik procedures.
What are the advantages of IntraLase Lasik compared to Traditional Lasik?
The benefits of IntraLase Lasik is it's suppose to give better vision. Patients where tested in each eye and the preferred IntraLase Lasik over Traditional Lasik.
Which is the better surgery LASIK, Contoura or Z LASIK?
Lasic
Do optometrists Near Louisville perform Lasik vision correction surgery right there in office or does it need to be scheduled at a hospital?
There are some doctors who perform Lasik correction surgery in the office. Most are done that way. Very few procedures need to be done in an outpatient setting at the hospital. Only if there are health circumstances that need to be monitored.
Where is lasik available?
LASIK is available throughout the world and in most cities.
What are the alternatives to LASIK?
Nonsurgical alternatives to LASIK are contact lenses and eyeglasses
What is lasik vision and how can it be formed?
Lasik surgery is a corrective vision option for individuals with eye issues such as astigmatism in addition to those with just vision problems. It is done by creating a flap on the eye while leaving some of the top layer attached and then remolding the eye.
