INDICATIONS OF EACH TECHNIQUE
- Radial keratotomy : Myopia from -1 to -3 diopters
- PRK or Lasek : Myopia from -1 to -3 diopters, astigmatism from -1 to -3 diopters
- Lasik :
- Aberrometry: Wavefront Customized treatment by aberrometry and Ultra Thin Lasik :
- Myopia : -1 to -10 even up to – 12 diopters
- Astigmatism : -1 to -6 diopters
- Significant optical aberrations
- large pupillary diameter in dim light
- Indication to enhance visual acuity
- Thin cornea
Particularities of each technique
- RK, PRK, Lasek and Lasik can induce a regression or a postoperative under-correction of the ablation profile due to individual variability of the human corneal tissue.
- In 4 to 5% of cases, a free retreatment is necessary
(according to results from Doctor Assaf).
- Retreatment is less frequent with customized treatment by aberrometry, estimated from 2% to 3%.
- Retreatment for over and under correction after RK and PRK can be performed by PRK and LASIK.
- Retreatment following Lasik is always done by Lasik
Inclusion criteria for refractive surgery
- Age : > 19 years
- Stable myopia, astigmatism or hyperopia for at least 2 years
- No ocular disease such as: keratoconus, evolutive glaucoma, chronic herpetic infection…
- No auto-immune disease : lupus, scleroderma …
- No uncontrolled ocular diabetes
- High motivation: professional, aesthetic, sportive…
Learn more about refractive surgery:
- Comparative table of each technique of refractive surgery
- Indications of each technique of refractive surgery
- Complications of refractive surgery
- Advanced and High Tech instruments for refractive surgery