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LASIK Refractive Surgery

Laser-assisted in situ keratomileusis: corneal flap creation followed by excimer laser stromal ablation to correct myopia, hyperopia, and astigmatism with rapid visual recovery.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Göz Hastalıkları department. Book Appointment →

What is LASIK Refractive Surgery?

LASIK is the most common laser refractive surgery worldwide, used to correct myopia (up to -10 D), hyperopia (up to +4 D), and astigmatism (up to ±6 D) by reshaping the corneal stroma with an excimer laser after creating a thin hinged corneal flap.

Modern LASIK uses femtosecond laser flap creation (bladeless or all-laser LASIK) instead of microkeratome, providing more predictable flap thickness and reduced complications. Wavefront-guided and topography-guided platforms further customize ablation profiles.

Suitable candidates are 18 years or older with stable refraction for at least 1 year, adequate corneal thickness (>500 μm), absence of dry eye disease, keratoconus, or autoimmune conditions, and realistic expectations about presbyopia and age-related changes.

Symptoms

Myopia (nearsightedness) requiring glasses or contact lenses
Hyperopia (farsightedness) with difficulty reading or distance vision
Astigmatism causing blurred or distorted vision at all distances
Contact lens intolerance or dryness
Active lifestyle limiting glasses or contact lens use
Occupational requirements for spectacle independence (military, aviation)
Stable refraction for at least 1 year before surgery

Risk Factors

Keratoconus or other corneal ectasia (contraindication)
Thin corneas (<500 μm central thickness)
Severe dry eye syndrome
Autoimmune diseases (rheumatoid arthritis, lupus, Sjögren)
Pregnancy or breastfeeding (refraction instability)
Uncontrolled diabetes or steroid use
Unrealistic expectations about postoperative vision

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Severe eye pain, redness, or vision loss after LASIK
  • Sudden flap displacement after eye trauma
  • Persistent dry eyes despite lubricant drops
  • Halos, glare, or starbursts not improving after 3 months
  • Regression of refractive error or undercorrection
  • Diffuse lamellar keratitis (sands of Sahara appearance)
  • Suspicion of post-LASIK ectasia (progressive corneal thinning)

Treatment Methods

01
Comprehensive preoperative evaluation (corneal topography, pachymetry, wavefront)
02
Femtosecond laser flap creation followed by excimer laser ablation
03
Topical anesthesia eye drops, no general anesthesia required
04
Postoperative antibiotic and corticosteroid drops for 1-2 weeks
05
Preservative-free artificial tears for at least 3-6 months
06
Avoidance of eye rubbing and water exposure for 1-2 weeks
07
Enhancement (touch-up) procedure if undercorrection persists after 3-6 months

Which Department to Visit?

You can visit our Göz Hastalıkları department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

Learn About Göz Hastalıkları Department

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.