Understanding LASIK: A Comprehensive Guide to Its Functionality and Key Insights.
Nearly two decades ago, the FDA gave its stamp of approval to the LASIK procedure, making it a frequent subject in discussions surrounding vision, corrective measures, and personal enhancement. Struggling with glasses? LASIK eye surgery might be your answer. Think the referee made a poor decision? He could certainly benefit from LASIK. Dreaming of having superhero-like powers to shoot lasers from your eyes? LASIK could be the way to go.
However, it's important to note that LASIK isn't suitable for everyone, nor does it address every vision issue.
How does LASIK eye surgery work?
LASIK eye surgery operates through a precise and innovative technique that has established it as one of the safest elective surgical options available. The procedure involves the creation of a micron-thin, circular flap in the cornea, which is the outer layer of the eye. Following this, the surgery entails the permanent removal of microscopic tissue fragments that contribute to the patient's visual impairments.
The first step involves creating a very thin, round flap in the cornea, which is the outer layer of the eye. This process takes only a few seconds, and the surgeon uses either a microkeratome or a femtosecond laser. After that, the surgeon carefully lifts the flap to reveal the area where the vision correction will take place, just beneath the eye's surface.
In the second step, a computer-controlled excimer laser is used to remove tiny bits of tissue that cause the patient's vision issues. Finally, the flap is placed back over the area to serve as a natural bandage, protecting the reshaped cornea as it heals.
Since the FDA's initial approval of LASIK eye surgery, over 19 million procedures have been conducted in the United States. Additionally, LASIK has garnered more than 45 FDA approvals for the treatment of conditions such as myopia, hyperopia, presbyopia, and astigmatism, among others.
What is the purpose of LASIK surgery? Is it true that lasers are utilized in the procedure?
Indeed, it is quite fascinating. To begin with, lasers are essentially concentrated beams of light that travel in unison at varying speeds within the same wavelength. For instance, the femtosecond laser, often employed to create the corneal flap, is an infrared laser that emits pulses at a rate of one quadrillionth of a second, resulting in minute disruptions in the corneal tissue. On the other hand, the excimer laser utilized in LASIK surgery for vision correction is an impressive ultraviolet light beam that can pulse at frequencies reaching up to 1000 Hz. It's interesting to note that each laser corresponds to a distinct color, as every laser operates using a specific color of light from the wavelength spectrum.
Lasers are employed in various surgical procedures due to their exceptional precision. This precision is particularly significant in LASIK surgery, where the terms "slices" or "cuts" are often used to describe the process. However, these terms do not fully capture the reality of the procedure. The entire LASIK operation is confined to the layers of the cornea, with no involvement of other parts of the eye. This capability is made possible by the safe application of lasers, which do not harm the surrounding tissues.
Is there pain associated with LASIK eye surgery?
LASIK eye surgery is typically not painful, as numbing drops are applied to the eye prior to and throughout the procedure. While patients may feel some pressure from the device that holds the eyelids open to prevent blinking, the use of numbing and lubricating drops ensures a comfortable experience. Following the surgery, a few patients may experience mild discomfort, which usually lasts around five hours.
Will you be conscious while undergoing LASIK?
Yes, this can make some people feel uneasy. We understand. It's important because the surgeon needs you to keep your eyes focused during the surgery. However, many steps are taken to ensure you feel calm and at ease. Numbing eye drops are used during the LASIK procedure, and you can also receive valium or other sedatives. It's important to note that being awake during the procedure won't harm you. The laser has advanced tracking technology, similar to what was used to dock the Space Shuttle with the International Space Station, which follows your eye movements closely. So, if you sneeze or move suddenly, the laser will automatically shut off.
Is LASIK eye surgery a safe procedure?
Is LASIK a safe procedure? This is a common inquiry regarding LASIK eye surgery, and it is certainly a valid one.
LASIK is one of the most extensively researched elective surgeries available. Over 7,000 clinical studies have been published on the subject, providing a wealth of data that underscores its safety and efficacy.
The patient satisfaction rate for LASIK is remarkably high, exceeding 96 percent. Many individuals who undergo LASIK experience improved vision compared to their best corrected vision with glasses prior to the procedure.
Notably, among the more than 40 million LASIK surgeries performed globally, there has not been a single reported case of blindness in healthy, suitable candidates.
What are the potential adverse effects?
Experiencing certain symptoms during the recovery phase following LASIK is quite common. The complications and side effects associated with LASIK primarily manifest as visual disturbances, such as glare, halos, ghosting, and dryness of the eyes. Despite the procedure being relatively quick, lasting only about 15 minutes, it is still a surgical intervention. It is normal for your eyes to feel somewhat dry, sensitive to light, or irritated as they heal during this recovery period. It is important to discuss any symptoms you encounter with your doctor during your follow-up appointments after LASIK.
Certain patients may encounter side effects following LASIK surgery, with dry eye being a common issue. Additional side effects related to night vision can manifest as glare, halos, ghosting, and starbursts. Generally, these visual disturbances tend to diminish on their own over several weeks or months, and in some instances, it may take up to a year for complete resolution. Some individuals may need to use extra eye drops to alleviate inflammation and dry eye, which can exacerbate these visual symptoms. In rare instances, occurring in less than 5 percent of cases, further LASIK treatment might be suggested to correct lingering vision issues, or patients may opt for significantly thinner glasses or contact lenses.
Is LASIK eye surgery available to everyone?
LASIK eye surgery is not suitable for everyone. Surgeons indicate that over 20% of individuals who seek LASIK consultations are found to be unsuitable candidates. Factors such as thin or irregular corneas, along with specific eye conditions like glaucoma, can disqualify a patient from undergoing the procedure. Additionally, certain autoimmune disorders, including lupus and rheumatoid arthritis, as well as medications like corticosteroids that may hinder the healing process, can render laser vision correction procedures less advisable.
Am I able to receive LASIK treatment at any location?
Is it possible to receive LASIK treatment at any location? LASIK is conducted by a refractive surgeon, who is a board-certified ophthalmologist with specialized surgical training in vision correction procedures.