What vision problems can LASIK correct?

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What vision problems can LASIK correct?

What is LASIK?

Lasik is a procedure that uses laser technology to permanently correct vision problems, including nearsightedness, farsightedness, astigmatism, and presbyopia. There are many different methods to choose from, depending on your vision, eye condition, comorbidities, and age. The most important thing is to choose the right Lasik for your eyes.

  1. Nearsightedness (Myopia) is caused by the excessive curvature of the cornea or the length of the eyeball, which causes light to focus before it reaches the retina, resulting in near objects being seen clearly and distant objects being blurry.
  2. Farsightedness (or Hyperopia) is caused by a cornea that is too flat or the eyeball is too short, causing light to focus beyond the retina, resulting in blurred vision of both near and far objects.
  3. Astigmatism is caused by the cornea not being round, causing light from each plane to not focus on the same point, and is often associated with nearsightedness or farsightedness, resulting in double vision.
  4. Presbyopia (age-related farsightedness) is caused by the degeneration of the eye muscles when people age from 40 years and up, which makes it difficult to focus on close-up objects. There is only a problem with near-upper vision. The older you get, the more your vision will become farsighted.

How many types of LASIK technology are there?

There are six types of LASIK technologies to correct refractive errors and their different LASIK procedures:

1) PRK (Photorefractive Keratectomy)


Treatment for abnormal vision using Excimer Laser technology that directly adjusts the corneal surface without the need to separate เล่น UFABET ผ่านมือถือ สะดวกทุกที่ ทุกเวลา the corneal layers. Once the curvature has adjust. Contact lenses are inserte to cover the wound on the corneal surface. While waiting for the wound on the corneal surface to heal back to normal. Treatment takes approximately 20-30 minutes and requires approximately 3-5 days of recovery.

  • strength:
    • Suitable for those who have nearsightedness, astigmatism, or farsightedness since birth.
    •  No corneal flap required
    • Play sports or engage in contact activities.
  • Limitations:
    • The wound heals slowly, may have scars, and requires steroid eye drops for about 1-3 months.
    • If not properly cared for, there is a chance of infection in the corneal surface.
    • After surgery, my eyes felt irritated and burning for about 3-4 days.

2) LASIK (Laser In-Situ Keratomileusis)


LASIK is a surgical method for treating refractive errors. It uses a blade to cut open the cornea before using Excimer Laser technology to adjust vision and then close the cornea. The treatment takes about 30 minutes and recovery time is about 1 day.

  • strength:
    • Suitable for those who have nearsightedness, astigmatism, or farsightedness since birth.
    • Mild eye irritation after surgery
    • Return to clear vision quickly