Tag: Lasers

Statistics for Lasik Surgery Patients

The Lasik operation can be a wonderful, life-changing option for many people whose vision is less than perfect. There are several different types of Lasik operations now available, from the original and well documented procedure to Lasik procedures done with three dimensional wavefronts, or done entirely with lasers. Each of these variations of the Lasik procedure should be discussed with the physician that is to perform the operation.
Like any surgery, Lasik does have the potential for side effects.

Sometimes reading the horror stories of the outcomes of a Lasik procedure can deter people from seriously considering such a choice. It is also true that the vast numbers of people who have a successful, trouble-free Lasik surgery tend not to report a long and detailed story of their experience, unlike those that have experienced trouble afterward.

However, it is good to know what the possible side effects of the Lasik procedure are, and also the likelihood that one of these side effects will occur for a particular patient. Just like any medicine we take, each has a possible number of side effects, but we generally assume that the likelihood of a serious side effect is small, and we take the medicine anyway. This article will hopefully put concerns of the prospective Lasik patient into perspective so that they can calmly and thoughtfully ponder having a Lasik procedure done in the future.

More than one million Lasik procedures are done in the US every year, according to the FDA. This arm of the national government has accumulated the following statistics for the most common side effects of the Lasik procedure. These statistics will also vary by the physician performing the surgery, so make sure to get as much information on the prospective Lasik physician as possible.

After Lasik surgery, 1.7 percent of patients experience some glare or sensitivity to light after the operation. This varies by patient, but this sensitivity is especially noticeable when looking at a bright light, such as a streetlight when walking at night, or other strong light and dark contrast. Another light related side effect is a halo around a light, and this occurs in 3.5 percent of Lasik patients.

The new, corrected vision can be noticed quickly by some Lasik patients, in as little as a few hours after surgery. Most patients that have undergone the Lasik procedure find the change is permanent within a few days. In 2.6 percent of clients that have had a Lasik procedure done, there is persistent visual fluctuation within at least a part of their sphere of vision.

Finally, some patients do not get a fully corrected sphere of vision after their Lasik procedure. This happens with a small number of clients, and the FDA statistics are that only 3 percent of patients have this effect. In all or nearly all cases, the physician in charge will perform an additional Lasik procedure to improve this.

This detailing of the major permanent side effects of the Lasik procedure should put any personal horror stories into perspective. Notice that none of the percentages are above 3 percent, and this should bring comfort to most prospective Lasik clients. However, it should also motivate them to look carefully at the Lasik physician’s personal record.

My Questions about the Lasik Procedure

Many people that wear glasses or contact lenses have listened to the claims of how Lasik can give them perfect vision. They have also heard great Lasik success stories, as well as stories from people that were not sure they had given the decision enough thought. This guide lists the most common questions asked by people who are considering Lasik vision correction, and answers given by reputable physicians.

The first and most important question asked about Lasik is, not surprisingly, “Is Lasik safe?” The answer is that it is normally quite a safe procedure, with success rates above 95 percent for good, experienced Lasik surgeons, and 90 percent average over all physicians that perform the Lasik procedure. This statistic about Lasik success assumes that the patient is a good candidate for Lasik surgery. The requirements have some specific details and should be gone over with the physician that will perform the Lasik procedure.

It is a very good idea to ask the Lasik physician which patients he has declined to perform the Lasik procedure on, to make sure that the particular physician has and operates with good standards. Any Lasik practitioner that tries to imply that everyone that comes in to his office is a good candidate for Lasik vision correction should be viewed with some skepticism. In any case, it is wise to interview several different physicians that perform the Lasik procedure before deciding on one.

A second frequently asked question about Lasik is “What are the possible complications from Lasik surgery?” Common side effects are starbursts or halos when looking at a light, sensitivity to light and difficulty with glare and night vision, and some sensation that a foreign body is in the eye. Most of these effects will pass within a few days after the Lasik procedure. Between 1 and 3 percent of patients will have a lasting side effect such as halos or some vision fluctuation.

It is a very good idea to discuss your particular situation with the Lasik physician to determine if you might be prone to any complications. There are also variants of the standard Lasik procedure, one of which uses additional waveforms to map out an individual eye, or techniques that only use lasers rather than a scalpel and a laser.

One question we all hesitate to ask is “Will the Lasik procedure be painful?” Since our eyes are one of the most sensitive parts of our bodies, it is comforting to know that having Lasik vision correction is usually nearly painless. There is often some mild discomfort after the procedure, but this is effectively controlled with medication.

“Will I have 20/20 vision once the Lasik correction is done?” Though many patients do get nearly perfect vision, not all patients have their vision totally corrected. You can definitely expect to have improved vision and minimized dependency on any glasses or contacts.

“What is the cost and how do I pay?” A typical Lasik surgeon charges between $500 and $2500 per eye, depending on the patient and the surgeon. However, a Lasik physician should be selected on experience level and track record, not on the lowest price. Insurance rarely covers the cost of Lasik, but many Lasik centers have a type of financing program offered to their clients.

Find several Lasik physicians in your area using the Internet feature DocShop and make a point to interview several on your list. Consider Lasik as one way to significantly improve the quality of your life.

My Day for Lasik Surgery

This story is for my family and friends who wonder what it is like to go through a Lasik vision correction procedure. I’ve shared my experiences with one or two colleagues at work that have also had Lasik done, and there are enough variations to give insight to those who are trying to choose between different Lasik physicians or different Lasik centers.

First, my Lasik procedure was scheduled for 4 PM in the afternoon, which was fine with me. One of the directions for patient that has just had a Lasik procedure was to go to sleep as soon as possible, in order for the healing process to begin as quickly as possible. And usually by the end of the afternoon I am too tired after working all day to be very nervous. Well, usually anyway.

I had only been there a few minutes when I was called into a room to prepare me for the Lasik procedure, and to get instructions (again!) on how to care for my eyes once the Lasik vision correction has been done. They offered me some Ativan, which is a mild sedative just to keep me calm during the Lasik process. The lasers themselves monitor any head or eye movement and turn themselves off when it occurs, so it isn’t that the sedative is for anything other than psychological reasons. I took it anyway. All of my colleagues at work also took it, though none of us really felt any different than we did before. Apparently it is a VERY mild sedative.

My eyes were prepared for the Lasik procedure by being dosed with eye numbing drops and some kind of medication. I cannot be sure of the other pre-operative steps, as I think I was trying very hard not to think about either Lasik or my eyes. Perhaps the sedative was a bit stronger than I imagined it was.

At this point I was escorted into another room for some time, where I sat back, listened to the piped-in music, and awaited my turn in the Lasik operating room. There were two other people waiting with me in this room, so apparently my doctor different setup for his Lasik patients than my colleagues. Both were alone in their pre-op rooms until they were escorted into the room where the Lasik procedure was actually performed.

As to the Lasik procedure itself, all of us have similar memories from this procedure. Each of us felt some pressure when the various Lasik implements were used on our eyes, though there wasn’t any real discomfort or pain. There was a blurring of vision for the eye being worked on, but the real sensation was mainly audio – the whirring and clicks of the machine. One of my colleagues also remembers a distinct smell, somewhat reminiscent of hair burning. There may have been a slight smell during my Lasik procedure, but it wasn’t significant enough for my attention to be focused on it.

After a short amount of time, my Lasik physician said he was done and that I had been a good patient. In all of our Lasik experiences, the operation itself was much easier than all of our worries about it beforehand. I hope this helps those of you considering having a Lasik procedure done.

The History of Laser Hair Removal

The lasers used for laser hair removal developed from a theory instituted by the Nobel prize-winning physicists Albert Einstein and Max Planck. This theory, first introduced in the 1920s, defined stimulated emission, or laser. The word laser is an acronym for light amplification by stimulated emission of radiation. However, it wasn’t until the 1960s that the first true laser was built and patented by Gordon Gould, an American physicist.

Laser hair removal devices of the 1960s sent out a continuous wavelength which caused damage to the surrounding skin tissue. In the late 1960s, Dr. Leon Goldman was the first to begin testing a ruby laser for hair removal. It was also in this time frame that the Q switch with developed for use with a laser. With the development of the Q switch it was possible to control the energy of the laser beam to be sent to out in controlled pulses. The Q switch worked much in the same way as a camera shutter.

Early devices for laser hair removal proved to be ineffective. In order to remove the hair follicle, there was severe damage to the surrounding skin area. The ruby laser, as well as the argon laser, are no longer used for laser hair removal.

Throughout the next several decades, researchers and physicists continued to experiment and test lasers for successful hair removal. It wasn’t until the 1980s that the first laser was introduced as a safe and effective method of hair removal. This discovery actually happened by chance when scientists noted that birthmarks treated with certain types of lasers caused the hair in that area to disappear and not grow back.

The FDA cleared the first laser for hair removal in 1995 . This laser, called the Soft Light, was a NeoDymium Yttrium Aluminum Garnets laser and was manufactured by Thermolaise. This laser was used with a chromophore of carbon-based lotion. After the skin was waxed, the carbon-based lotion would be rubbed onto the skin and enter the hair follicle. The beam of light produced by the laser would heat the carbon quickly and destroy the hair follicle. However, this type of laser treatment could easily damage nearby skin cells. Eventually, this type of laser hair removal proved to be less effective than targeting the natural pigmentation that existed in the skin.

In 1997, several types of laser hair removal devices were cleared by the F DA. One of these was the ruby laser, which used a shorter wavelength system. However, clinical research eventually showed that the laser did not produce damage far enough down the hair shaft to result in permanent hair loss. Researchers also found that if a t the ruby laser was used on people with dark or tan skin there was a high risk of hyperpigmentation. Other types of laser hair removal devices today include alexandrite, diode, and NeoDymium Yttrium Aluminum Garnets lasers.

Research and development in the area of laser hair removal are still in the early stages. However, continuing research, testing and development in this area continues to produce safer and more effective equipment.