Imagine your morning without searching for glasses.
Answer 6 short pages about your eyes. Using the same safety criteria surgeons use worldwide, this tool shows which specs-removal option may suit you best — Epi Contoura, Contoura Vision LASIK, ICL, or RLE.
You will need your latest glasses prescription, and if available: corneal thickness (pachymetry), topography scan, and anterior chamber depth from your eye report. Don't have them? No problem — we measure everything free at your consultation.
A little about you
Has your glasses power been stable for 6 months or more?
"Stable" means your number changed by 0.5 D or less in the last 6–12 months. Surgery on a changing power gives a result that fades.
Enter your prescription
Copy from your latest glasses prescription. Minus (−) numbers = myopia (distance blur). Cylinder = astigmatism. If an eye has no power, leave 0.
Corneal thickness & shape
Central Corneal Thickness (CCT) is on your pachymetry / topography report, in microns (µm). Normal is around 500–560 µm. Skip if you don't have it — we'll measure it free.
Anterior Chamber Depth (ACD)
ACD is the space between your cornea and your natural lens, in millimetres — found on biometry (IOL Master / Lenstar) or Pentacam reports. It decides whether an ICL (implantable lens) can fit safely. ICL needs at least 3.0 mm (measured from the corneal endothelium). Skip if you don't have it.
Book your free suitability work-up
Dr. Pratyush will confirm your best option with a full scan of your cornea, retina and eye pressure. Your answers will be sent with your booking.
After the chat opens, please also attach your topography photos in the same WhatsApp chat.
Scientific basis of this tool
- Munnerlyn CR et al. Photorefractive keratectomy: a technique for laser refractive surgery. J Cataract Refract Surg 1988 — ablation depth ≈ (zone² × D)/3 (~16 µm per dioptre at 6.5 mm).
- Santhiago MR et al. Percent tissue altered (PTA) and ectasia risk after LASIK. Am J Ophthalmol 2014 — PTA ≥ 40% raises ectasia risk.
- Randleman JB et al. Ectasia Risk Score System. Ophthalmology 2008 — residual stromal bed ≥ 300 µm convention for LASIK.
- US FDA approval, WaveLight Contoura (topography-guided LASIK), 2015 — myopia up to −8.00 D, cylinder up to −3.00 D.
- US FDA approval, STAAR EVO/EVO+ Visian ICL, 2022 — myopia −3.00 to −20.00 D, cylinder up to 4.00 D, ACD ≥ 3.00 mm, age 21–45.
- American Academy of Ophthalmology, Refractive Surgery Preferred Practice Pattern, 2022 — age ≥ 18 and refractive stability (≤ 0.5 D change over ≥ 6–12 months) before surgery.
- Alió JL et al. Refractive lens exchange. Surv Ophthalmol 2014 — RLE favoured in presbyopic ages; caution in young high myopes (retinal detachment risk).
This tool gives an educational estimate only. It is not a diagnosis or a treatment decision. Final choice of procedure is made by Dr. Pratyush Ranjan after complete examination, including topography review, cycloplegic refraction, retina check and eye-pressure assessment.