Lasik surgery is an effective for nearsightedness, farsightedness and astigmatism

What do you need to know about the LASEK
What do you need to know about the LASEK?
August 7, 2019
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Lasik surgery is an effective for nearsightedness, farsightedness and astigmatism

LASIK is considered an elective and cosmetic surgery, meaning that it is not usually deemed medically necessary. . LASIK can improve your quality of life by potentially eliminating the need for glasses or contacts. LASIK (laser-assisted in situ keratomileusis) is the most commonly performed laser eye surgery to treat myopia (nearsightedness), hyperopia (farsightedness) and astigmatism. LASIK can improve vision and have a positive, lasting impact. Around 80 percent of people who get LASIK surgery will have no need for glasses or contacts after the procedure.

LASIK

Like other types of laser refractive surgery, the LASIK procedure reshapes the front surface (cornea) of the eye to enable light entering the eye to focus on the retina without glasses or contact lenses. LASIK typically is pain-free and requires only about 15 minutes to treat both eyes. Vision improvement is immediate and often stabilizes in as little as 24 hours.

Refractive Errors

Nearsightedness: Myopia is a very common condition in which the light coming into the eye is not focused properly onto the retina, making it difficult to see objects far away. The condition is usually caused by an elongation of the eyeball that occurs over time.

Farsightedness: Hyperopia is the opposite of myopia, and is usually caused by shortening of the eyeball.

Astigmatism: is an imperfection of the cornea preventing part of it from focusing light onto the retina. The result is a blurred area within an otherwise clear image. This problem may occur along with either myopia or hyperopia. These frequent conditions are termed “refractive errors.”

The LASIK procedure

There are three essential steps to a LASIK procedure:

  1. A mechanical surgical tool called a microkeratome or a femtosecond laser is used to create a thin, circular flap in the cornea. The surgeon then folds back this hinged flap to access the underlying cornea (called the stroma)
  1. An excimer laser is used to reshape the corneal stroma. This highly specialized laser uses a cool ultraviolet light beam to remove (“ablate”) microscopic amounts of tissue from the cornea to reshape it so it more accurately focuses light on the retina for improved vision.
  2. The corneal flap is laid back in place, where it adheres to the corneal stroma without stitches.

Important Points

  • Before LASIK Your eye doctor will perform a thorough eye exam to determine if you are a good candidate for LASIK vision correction.
  • You should stop wearing contact lenses for a period of time advised by your doctor (typically at least two weeks prior to LASIK). This is important because contact lens wear can alter the natural shape.
  • Immediately before your LASIK surgery, numbing eye drops are applied to your eye to prevent any discomfort during the procedure.
  • You may feel a temporary burning or itching sensation immediately following the procedure.
  • You should expect some blurry vision and haziness immediately after surgery; however, for most people, vision improves immediately and stabilizes within a few days.
  • Generally, you will return to see your eye doctor or your LASIK surgeon the day after surgery.
  • Follow your doctor’s instructions and take any medication prescribed. Also, avoid rubbing your eyes.

Reference:

https://www.allaboutvision.com/en-in/visionsurgery/lasik/

https://www.hopkinsmedicine.org/wilmer/services/cornea/conditions_we_treat/nearsight.html

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