Lasik (Laser-Assisted in SItu Keratomileusis) is
a type of refractive surgery.
In simple term, Lasik is a laser eye surgery performed by an ophthalmologist using a laser for the correction of myopia, hyperopia, and astigmatism.
In other words, LASIK is considered as an effective remedy for enhancing the visual abilities of an individual.
LASIK is an alternative to eyeglasses or contact lenses.
Correction of refractive errors using Lasik type of refractive surgery.
What is Refraction?
The cornea is a part of the eye that helps focus light to create an image on the retina. It works in much the same way that the lens of a camera focuses light to create an image on film. The bending and focusing of light is also known as refraction.
Humans see and focus on objects through retina and cornea where retina acts as a focusing device of a camera. Usually an individual with normal visual abilities has matching retina and cornea as per the size and shape of eye. In due course of time when this proportion is mismatched, the results are considered as refractive errors that make you see blurred images.The imperfections in the focusing power of the eye are called refractive errors.
Persons with myopia, or nearsightedness, have more difficulty seeing distant objects as clearly as near objects.
Persons with hyperopia, or farsightedness, have more difficulty seeing near objects as clearly as distant objects.
Astigmatism is a distortion of the image on the retina caused by irregularities in the cornea or lens of the eye.
These are the primary three types of refractive errors suffered most commonly by majority of people irrespective of their age.Combinations of myopia and astigmatism or hyperopia and astigmatism are common. Glasses or contact lenses are designed to compensate for the eye's imperfections. Surgical procedures aimed at improving the focusing power of the eye are called refractive surgery.
Most of the vision problems arise due to the improper shape of cornea or because of the corner most parts of retina.
In LASIK surgery, precise and controlled removal of corneal tissue by a special laser light emitter , reshapes the cornea changing its focusing power and enhances the visual abilities of an individual.
Here are a few of the most common risks involved in Lasik:
Undercorrection is one possible complication. An example is if you vision is corrected to 30/20 instead of 20/20. This is not a great problem and may even be desirable in some patients since they won’t have to use reading glasses. Undercorrection happens most often in patients with really bad vision.
Overcorrection is simply the opposite of the scenario described above, but is far less common. In many cases it occurs temporarily and lasts for less than a month. During the month glasses can be worn to help during the adjustment period. If a permanent overcorrection occurs, corrective surgery can be scheduled about 6 months later.
Even less rare is an operation resulting in astigmatism, which causes blurred vision. In almost all cases, the astigmatism can be corrected with another surgery.
a type of refractive surgery.
In simple term, Lasik is a laser eye surgery performed by an ophthalmologist using a laser for the correction of myopia, hyperopia, and astigmatism.
In other words, LASIK is considered as an effective remedy for enhancing the visual abilities of an individual.
LASIK is an alternative to eyeglasses or contact lenses.
Correction of refractive errors using Lasik type of refractive surgery.
What is Refraction?
The cornea is a part of the eye that helps focus light to create an image on the retina. It works in much the same way that the lens of a camera focuses light to create an image on film. The bending and focusing of light is also known as refraction.
Humans see and focus on objects through retina and cornea where retina acts as a focusing device of a camera. Usually an individual with normal visual abilities has matching retina and cornea as per the size and shape of eye. In due course of time when this proportion is mismatched, the results are considered as refractive errors that make you see blurred images.The imperfections in the focusing power of the eye are called refractive errors.
Persons with myopia, or nearsightedness, have more difficulty seeing distant objects as clearly as near objects.
Persons with hyperopia, or farsightedness, have more difficulty seeing near objects as clearly as distant objects.
Astigmatism is a distortion of the image on the retina caused by irregularities in the cornea or lens of the eye.
These are the primary three types of refractive errors suffered most commonly by majority of people irrespective of their age.Combinations of myopia and astigmatism or hyperopia and astigmatism are common. Glasses or contact lenses are designed to compensate for the eye's imperfections. Surgical procedures aimed at improving the focusing power of the eye are called refractive surgery.
Most of the vision problems arise due to the improper shape of cornea or because of the corner most parts of retina.
In LASIK surgery, precise and controlled removal of corneal tissue by a special laser light emitter , reshapes the cornea changing its focusing power and enhances the visual abilities of an individual.
LASIK is used to remove glasses or contact lenses through making a match for the difference created between eye size and cornea with retina. Since laser treatment has same but more stable effects, you have better chances enjoying improved vision for a longer period. Correction of eye through LASIK is a great option for those who wish to get rid of the glasses and vision errors.
Undercorrection is one possible complication. An example is if you vision is corrected to 30/20 instead of 20/20. This is not a great problem and may even be desirable in some patients since they won’t have to use reading glasses. Undercorrection happens most often in patients with really bad vision.
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Even less rare is an operation resulting in astigmatism, which causes blurred vision. In almost all cases, the astigmatism can be corrected with another surgery.
The side effects of lasik include halos, star bursts, night-driving problems and eye dryness.
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