LASIK process

LASIK (Laser-Assisted In Situ Keratomileusis) is a refractive eye surgery that reshapes the cornea to correct nearsightedness, farsightedness, and astigmatism. The procedure itself takes about 15-30 minutes for both eyes, but the full process — from initial consultation through recovery — spans several weeks.

71 steps across 12 sections

1. Initial Research (Weeks Before)

  • Understand the different procedure types
  • Stop wearing contact lenses: soft contacts 1-2 weeks before consultation; rigid/gas permeable 3-4 weeks before (contacts change corneal shape and affect measurements)
  • Research surgeons in your area

2. Consultation and Eye Exam (1-2 Hours)

  • Comprehensive eye exam including:
  • Visual acuity test
  • Corneal topography (mapping the surface of the cornea)
  • Corneal pachymetry (measuring corneal thickness)
  • Pupil size measurement
  • Wavefront analysis (mapping visual aberrations)
  • Dry eye assessment
  • Dilated eye exam (retinal health)
  • Intraocular pressure measurement
  • Surgeon discusses results, recommends procedure type, and answers questions

3. Pre-Op Preparation (1-2 Weeks Before Surgery)

  • Stop wearing contacts as directed (if not already done)
  • Fill prescriptions for post-op eye drops (antibiotic, anti-inflammatory, artificial tears)
  • Arrange transportation for surgery day and follow-up appointments
  • No eye makeup, lotions, or perfume on surgery day
  • Stock up on preservative-free artificial tears
  • Take the day of surgery and ideally the next day off work

4. Surgery Day (15-30 Minutes)

  • Arrive at the surgery center; expect to be there 1-2 hours total
  • Numbing eye drops are applied — you feel pressure but not pain
  • LASIK procedure:
  • A suction ring stabilizes the eye
  • A femtosecond laser creates the corneal flap (takes ~10 seconds)
  • The flap is lifted
  • An excimer laser reshapes the cornea (20-60 seconds per eye)
  • The flap is repositioned — it adheres naturally without stitches
  • Total laser time: Under 1 minute per eye
  • You may smell a slight burning odor (this is normal — it is vaporized tissue)

5. Immediate Post-Op (First 24 Hours)

  • Go home and rest with eyes closed for 4-6 hours
  • Wear protective shields over eyes while sleeping (prevents rubbing)
  • Vision may be blurry, watery, or light-sensitive — this is normal
  • Begin using prescribed eye drops (antibiotic + anti-inflammatory + artificial tears)
  • No rubbing eyes, no screens for several hours, no driving

6. Follow-Up Visits

  • Day 1 post-op: Surgeon checks vision and healing; most patients see well enough to drive
  • 1 week: Vision check and healing assessment
  • 1 month: Vision stabilization check
  • 3-6 months: Final assessment; prescription is usually stable by now
  • Annual: Regular eye exams for life

7. Age

  • FDA-approved for ages 18+
  • Most surgeons prefer age 21+ when vision is more stable
  • Upper age: No strict cutoff, but patients over 40 may need reading glasses anyway (presbyopia) and those developing cataracts may be better served by lens replacement

8. Vision and Prescription

  • Prescription stability: Must be stable for at least 1-2 consecutive years (no change greater than 0.50 diopters)
  • Nearsightedness: Up to approximately -12.00 diopters (FDA approved)
  • Farsightedness: Up to approximately +6.00 diopters
  • Astigmatism: Up to 6.00 diopters
  • Higher prescriptions may be better candidates for ICL (implantable lens)

9. Eye Health

  • Corneal thickness: Must have sufficient corneal tissue for reshaping (minimum ~500 microns, measured during evaluation)
  • Corneal shape: No keratoconus or abnormal corneal topography
  • No active eye infections or injuries
  • Pupil size: Very large pupils may increase risk of halos/glare (less of an issue with modern lasers)
  • No severe dry eye — Moderate dry eye may need treatment before LASIK
  • No cataracts or glaucoma that would affect outcomes

10. General Health

  • Not pregnant or nursing (hormonal changes affect corneal shape)
  • No uncontrolled diabetes (affects healing)
  • No autoimmune disorders (lupus, rheumatoid arthritis) that impair healing
  • Not taking certain medications (isotretinoin/Accutane, amiodarone)
  • Realistic expectations — LASIK improves vision but does not guarantee 20/20

11. Disqualifying Conditions

  • Keratoconus or corneal ectasia
  • Thin corneas (below safe threshold for procedure)
  • Unstable prescription
  • Severe dry eye syndrome
  • Uncontrolled autoimmune disease
  • Active eye disease or infection
  • Pregnancy or breastfeeding

12. LASIK (Laser-Assisted In Situ Keratomileusis)

  • How it works: A thin flap is created on the cornea surface, the underlying tissue is reshaped with an excimer laser, and the flap is repositioned
  • Cost: $2,000-$4,000 per eye ($4,000-$8,000 total)
  • Recovery: 1-2 days to functional vision; stable by 1-3 months
  • Pros: Fastest recovery, minimal discomfort, long track record (30+ years of data)
  • Cons: Flap-related complications (dislodgement, wrinkles, inflammation), higher dry eye risk, not suitable for thin corneas
  • Best for: Moderate nearsightedness/farsightedness/astigmatism with adequate corneal thickness

Common Mistakes

  • Choosing based on price alone
  • Not stopping contacts early enough
  • Ignoring dry eye symptoms pre-surgery
  • Having unrealistic expectations
  • Not using eye drops as prescribed

Pro Tips

  • Schedule your consultation as a separate visit from surgery
  • Get consultations from 2-3 surgeons
  • Time your surgery strategically
  • Max out your HSA in the months before surgery
  • Stack vision insurance discount + HSA

Sources

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