LASIK is the most occurring laser eye surgery that performs to treat astigmatism, myopia (nearsightedness), and hyperopia (farsightedness). Just like another sort of refractive surgery, the procedure of Lasik modifies the cornea to allow the light to properly enter the eye focuses on the retina for better and clear vision. The LASIK word refers to “Laser-assisted in situ keratomileusis.” Lasik surgery is elective that is performed by an ophthalmologist (an eye surgeon) of adults, either in an eye surgical center or in the office of a healthcare provider.
Lasik is an eye surgery that is well-known and most occurring laser refractive surgery to resolve all the problems of vision. Laser-assisted in situ keratomileuses (LASIK) can be a substitute to contact lenses or glasses. While LASIK surgery, a unique kind of cutting laser uses to alter the shape precisely of the dome-shape visible tissue at the front side of your eye (cornea) for clearer vision. In eyes having normal vision, the cornea refracts the light accurately on the backside of the eye (retina).
But having astigmatism, farsightedness (hyperopia), or nearsightedness (myopia), the light incorrectly bends that proceeds to blur vision. Contact lenses or glasses can improve vision, but transforming itself the cornea also gives significant refraction. LASIK surgery consists of utilizing a laser that targets to transform the cornea, the front side of an eye. So performing that, refractive faults such as farsightedness and nearsightedness problems through the way light refract in an eye that corrects and vision sometimes enhances permanently.
While normally considered effective and safe, there are sort of risks and some recovery perspectives to consider. Additionally, not everyone who wants to have LASIK is a befitting candidate. LASIK surgery is significantly pain-free and it only takes 15 minutes to perform for both eyes. The results show better and clearer vision without any contact lenses or eyeglasses. The results begin right after the surgery and the vision mostly continues to stabilize and improve over some days. There are three chief parts of the LASIK eye surgery such as corneal repositioning, corneal flap creating, and corneal reshaping. (1)
If you are not a suitable LASIK candidate, several other vision surgeries for correction are also assessable, like phakic IOL surgery, LASEK, and PRK laser eye surgery. If you require a complete eye examination, then visit your doctor or optometrist, who will be able to explain to you if you are a suitable candidate to perform laser surgery before you go out to a LASIK specialist. In a way to perform LASIK surgery, a patient must fulfill the criteria such as have nearsightedness, farsightedness, or astigmatism that is stable and not too critical (it does not alter within the last year). And the patient should be 18 years old at least.
Optical conditions and abnormalities such as dry eye, the cone-shaped cornea (keratoconus), uncontrolled or advanced glaucoma, and a few other health conditions such as uncontrolled diabetes, eliminate you as a member of this process. LASIK reforms the cornea so the light can refract (bend) completely and can properly focus on the retina, where it will convert into the nerve signals sent back into your brain that interpret as visual photos. LASIK surgery aims to improve the vision permanently. In most cases, LASIK removes the requirement to wear any contact lenses or eyeglasses. That means post-surgery vision might not be precise forever. (2)
A surgeon who specifically qualifies in eye surgery first draws a thin and precise corneal flap in a hinged manner with the help of a microkeratome during the LASIK surgery. The surgeon then tends to pull back the hinged flap to clear the view of the underlying corneal tissues. Then, by using the excimer laser the surgeon reshapes the cornea in a distinct, precise pattern for each individual. The surgeon then gently reposition the flap onto the underlying cornea and it happens without any sutures. However, the actual timing of the procedure might vary depending on the amount of correction you need.
The whole procedure of Lasik surgery requires an advanced and state of the art laser known as excimer laser to improve vision, treat refractive errors, and reduce the need for contact lens or glasses. The laser procedure of LASIK changes the shape of the cornea, which is a transparent cover of the front of the eye. Though the excimer laser was in use for several years but Loannis Pallikaris from Greece was the first one to develop LASIK around 1991. The mismatch in the optical system is known as refractive error and leads to blurry image at some point.
The front surface i.e., the cornea in the human eye and the lens present inside the eye combine to form the focusing system of the eye. Lens and cornea are potentially responsible for directing the incoming rays on the surface of the retina as similar as the camera lenses focusing lights onto the film. The power of the lens and cornea in the human eye perfectly match the images and the length of the eye to get a focused image. However, any changes in this perfect optical system leads to the development of refractive errors and vision problems. The procedure of LASIK surgery mostly requires ten minutes in total in the operating room. During your time in the operation room, the surgeons utilize the laser for less than minute per eye.
Lasik eye surgery is quite famous and a common practice to correct the refractive errors and vision problems. Lasik or laser-assisted in situ keratomileusis can be a substitute to contact lenses or glasses for eye sight issues. A special form of cutting laser precisely alter the dome-shaped transparent tissue at the cornea to correct vision in patients. The cornea in the perfect optical system bends or refracts the light correctly onto the surface of retina at the hind side of the eye. However, in case of myopia, (nearsightedness), astigmatism, or hyperopia (farsightedness), the light does not bend correctly leading to blurry images and vision. (3)
Contact lenses or glasses can help to correct the altered or blurred vision, but the reshaping of cornea itself can also be a game changer to attain the maximum refraction. If you are thinking about getting LASIK surgery, then you must be already wearing contact lenses or glasses. A specialized eye surgeon or doctor will walk you through whether the LASIK surgery is an option for you or not. Some other similar surgical refractive procedures might also work for you to correct the vision problems.