Astigmatism is a refractive error where the cornea is curved more in one direction than another — shaped a little more like a rugby ball than a football — so light focuses at more than one point. Images can look soft, stretched or slightly doubled at every distance, not just far or near.
It is very common, often present from birth, and frequently sits alongside a nearsighted or farsighted number. It cannot be exercised away — but for most eyes it corrects well, and the right option is chosen after mapping your cornea.
Cylindrical power · “CYL” number · Belan-shaped eye number
Refractive Services & Cornea
Astigmatism rarely blurs vision only far away or only up close. Because light focuses at more than one point, images can look soft, stretched or slightly doubled at all distances — and many people strain to compensate for years without realising why.
Blurred or distorted vision at near and far — letters and edges that smear or ghost slightly.
Glare, starbursts and haloes around lights — most obvious driving at night, when headlights flare across the windscreen.
Eye strain, tired eyes or headaches after screens, reading or close work.
Frequent squinting to bring things into focus.
A prescription that already lists a “cylinder” (CYL) and axis value alongside your sphere power.
A family history of astigmatism, or a nearsighted / farsighted number that keeps you in glasses.
A rapidly changing astigmatism can occasionally point to a corneal condition rather than a simple glasses change.
Persistent night-driving glare that no glasses seem to fix.
Vision that no glasses prescription seems to fully sharpen.
A cylinder number that keeps rising at each eye check.
Any sudden distortion of vision — straight lines that begin to look bent.
Astigmatism can occur on its own or together with myopia (nearsightedness) or hyperopia (farsightedness).
There is a clear ladder of options — from simple non-surgical correction to laser and lens-based surgery. Because we offer the full range under one roof, our surgeons match the path to your cornea, your power and your lifestyle rather than fitting every eye to a single method. Your evaluation confirms what is right for you.
Astigmatism is where topography-guided treatment earns its keep: because Contoura Vision builds its plan from thousands of measured elevation points on your cornea, it is particularly well matched to astigmatic corneas, where the irregular curve is the whole problem. Where powers are high or corneas thin, a toric ICL corrects the cylinder without reshaping the cornea — and for patients having cataract surgery, toric IOLs can correct astigmatism at the same time. If you would like the background first, read our guide on astigmatism causes, diagnosis and treatment.
Not everyone is a candidate for every option. Suitability, benefits and risks depend on your prescription, corneal thickness and shape, age and overall eye health, and can only be determined after a detailed evaluation with our doctors.
Astigmatism planning lives or dies on accurate measurement, so mapping the cornea is central to how we decide. On the OCULUS Pentacam we build a detailed tomography map of your cornea’s front and back curves and its thickness; the iTRACE adds ray-tracing aberrometry that shows exactly how light is being distorted as it passes through your eye.
Candidacy screening follows the same principles regulators highlight for laser vision correction — a stable prescription, adequate corneal tissue and healthy eyes. If surgery is not the safest choice for your eyes, we will tell you honestly and guide you toward glasses, toric contact lenses or another option.
A detailed tomography map of the cornea’s front and back curves and its thickness — the back surface is where the earliest signs of keratoconus appear.
About the PentacamRay-tracing aberrometry that shows exactly how light is being distorted as it passes through your eye — mapping the visual effect of your astigmatism.
About the iTRACEIs your astigmatism regular or irregular? Is the cornea thick and healthy enough for laser? And how much cylindrical power do you have, and is it stable?
The shape of the unevenness changes the plan entirely — which is why every astigmatism work-up here includes corneal tomography before any surgery is discussed.
The cornea’s curve is uneven but smooth and symmetrical, like a rugby ball. It corrects predictably with cylindrical glasses, toric lenses or laser treatment — the great majority of astigmatism falls here.
The surface is uneven in a non-symmetrical way, so no single axis of correction fully sharpens vision and glasses never quite seem right. The most important cause to rule out is keratoconus — a progressive thinning and steepening of the cornea.
Keratoconus often first shows up as astigmatism that keeps rising at every check. This is exactly what Pentacam tomography is designed to detect — it maps the back surface of the cornea, where the earliest changes appear. If keratoconus is found, laser reshaping is generally unsuitable and the priority becomes stabilising the cornea, often with corneal cross-linking (CXL), alongside specialised contact-lens fitting for vision. Our cornea specialist, Dr. Hem Shah, manages this pathway in-house.
For suitable patients with regular astigmatism, laser vision correction reshapes the cornea to neutralise the cylinder, and the result is long-lasting and stable in most eyes. Published outcomes for laser vision correction in well-selected patients are strong — the American Academy of Ophthalmology notes that about 9 in 10 LASIK patients achieve 20/20 to 20/40 vision without glasses.
It would not be right to promise a fixed outcome for anyone, though — which is why the pre-operative evaluation is so thorough, and why we set realistic expectations before anything is planned.
Individual results and recovery vary based on your eye condition, prescription, corneal thickness, age, overall eye health and healing response. Suitability depends on a detailed evaluation, and not everyone qualifies for laser or lens-based correction.
A small amount of residual power can remain after surgery, and in some eyes part of the number gradually returns over time (regression); published enhancement rates are below 1% at large centres.
Irregular astigmatism — for example from keratoconus — is managed rather than simply corrected.
As with all eyes, age-related near blur (presbyopia) can still develop later in life, so reading glasses may be needed with age.
All surgery carries some risk, which your surgeon will discuss with you in full before anything is planned.
There is no single flat price, because it depends on how much cylindrical power you have, whether it comes with a nearsighted or farsighted number, and which technique suits your cornea. Glasses and toric contact lenses are the most economical route.
Each procedure page — LASIK, Contoura Vision and SMILE — carries its own clear, starting-from range, and our refractive surgery cost page brings the indicative ranges together. Every figure is starting-from and subject to an individual consultation; toric ICL pricing is confirmed case by case.
Because astigmatism correction is usually elective, insurance cover is generally limited — but we make planning easier with Easy EMI options and clear, up-front costing.
Your exact cost is confirmed only after an examination. Consult our doctors for a clear, personalised estimate and to discuss Easy EMI options.
Book Your ConsultationNABH-accredited hospital — three modular operation theatres and an in-patient ward — quality and safety you can verify.
Precise corneal mapping — the OCULUS Pentacam and iTRACE, so astigmatism is measured and planned in detail, not estimated.
The full ladder under one roof — Contoura, LASIK, SMILE and toric ICL — so the technique is matched to your eyes, not the other way around.
A safe pathway for irregular corneas — keratoconus screening on every work-up, with cross-linking and specialist cornea care in-house.
A trusted track record — 1.2 lakh+ surgeries, 20+ years of experience, and recognition including the Ayushman Bharat Awards (2021 & 2024).
Director & Chief Ophthalmologist · Phaco, Refractive & Glaucoma
23+ years and 80,000+ cataract surgeries, Aravind-trained — supported by cornea & refractive surgeon Dr. Hem Shah, so both the surgical and corneal sides of astigmatism are covered.
View ProfileThe questions patients ask us most. For anything specific to your eyes, a consultation gives the clearest answer.
Related: Myopia · Hyperopia · Presbyopia · Eye care glossary
Medically reviewed by Dr. Sanjeev Bisla and the medical team at Dayal Eye Centre · Last updated: 28 July 2026 · Editorial Policy