What eye power is suitable for LASIK?

Background You Need to Know

Ideal LASIK candidates are 21+, have stable refraction for 12 months, no active eye disease, adequate corneal thickness, and realistic expectations. About 80% of glasses-wearers qualify for some form of laser vision correction.

From a clinical standpoint, the cornea is one of the most precisely measured structures in the human body — modern Pentacam and OCT scanners measure thickness to within 5 microns of accuracy. This precision is what enables surgeons to predict outcomes for each individual patient rather than relying on population averages alone. Every recommendation given before LASIK is grounded in your specific corneal map, refractive stability, tear film quality and pupil behaviour in dim light.

The Detailed Answer

In clinical practice, the answer depends on your individual eye anatomy, the LASIK technology used, and how closely you follow post-operative care guidelines. Most patients in India find that with proper screening and a qualified surgeon, the outcome aligns very closely with the published clinical literature.

That said, blanket internet answers can be misleading because they don't account for the variability in corneal thickness, tear film, refractive error magnitude or lifestyle. The personalised pre-LASIK evaluation is what converts a generic answer into a specific one for your eyes.

Practical Guidance for Indian Patients

Patients in Delhi, Hyderabad and Mumbai particularly benefit from understanding this because of the specific environmental factors — air pollution (PM2.5 spikes in winter), heavy office AC, 8–10 hour daily screen exposure, and dust-heavy outdoor commutes — that affect post-LASIK comfort and healing speed.

Our standard guidance is: stay indoors with sunglasses for the first 48 hours, use lubricant drops every 1–2 hours during screen time for the first month, avoid two-wheeler riding for at least a week (wind exposure dries the cornea rapidly), and stay well hydrated. These small adjustments make a meaningful difference to the recovery experience.

Common Myths to Ignore

Myths we hear weekly that are simply wrong:

• 'LASIK results wear off in 5 years' — The corneal change is permanent. Stable results last for decades in 90%+ of patients.
• 'Only young people can do LASIK' — Patients in their 40s, 50s and even 60s undergo LASIK successfully every day; the technology is simply tailored to age (e.g., blended vision after 40).
• 'You can't do LASIK with high power' — LASIK works up to about –10 D myopia and +6 D hyperopia. Beyond that, ICL is the better option — but you're still a candidate for vision correction.
• 'Insurance covers LASIK' — Standard mediclaim usually doesn't, because it's classified as elective. Always confirm with your provider in writing.

What You Should Do Next

To get a clear, personalised answer:

• Book a free LASIK suitability test that includes corneal topography (Pentacam), pachymetry, dry eye assessment and dilated retina exam
• Ask the surgeon to explain your specific candidacy in plain language — not just 'you're suitable'
• Compare 2–3 technology recommendations (Femto, Contoura, SMILE, InnovEyes) with the cost-benefit of each laid out clearly
• Confirm post-op follow-up schedule — a minimum of 4–6 visits over 6 months should be included in your package
• Verify enhancement policy — most reputable centres offer free touch-ups within 12 months if your prescription drifts
• Check the laser platform age — under 5 years is preferable; older platforms may not deliver the precision of newer-generation lasers