Strabismus (Squint) Correction Surgery Cost Calculator

Strabismus (Squint) Correction Surgery Cost Calculator helps estimate Korea-related hospital procedure, surgery, recovery, complication reserve, and insurance scenarios in English.

Health cost scenario inputs

Enter Korea-related chronic care, eldercare, therapy, procedure, fertility, diagnostic, or medical tourism assumptions. Results are simplified planning estimates.

Procedure gross quote

₩2,450,000

Insurance or support amount

₩0

Estimated self-pay with reserve

₩2,572,500

Monthly reserve target

₩2,572,500

1 month plan

This English page explains Korea strabismus (squint) correction surgery — extraocular muscle surgery that recesses, resects, or uses an adjustable suture on the six eye muscles to realign the eyes (esotropia, exotropia, vertical, or paralytic). The decisive cost factor is PURPOSE, not scope. Therapeutic cases are covered by National Health Insurance: children under 10 (vision can still develop), double vision (diplopia) that impairs daily life, paralytic strabismus from trauma or cranial-nerve palsy, and strabismus from thyroid eye disease or other systemic/orbital disease; a covered surgery costs roughly KRW 300,000-500,000 out of pocket at the 20% inpatient rate. A purely cosmetic (appearance-only) surgery in an adult with no expected vision recovery is fully NON-COVERED (about KRW 1,600,000 for both eyes on hospital non-covered price lists), is excluded from private indemnity insurance (the standard policy excludes strabismus/visual-system surgery done for appearance rather than vision improvement), and is excluded from the medical-expense tax credit (Income Tax Act Enforcement Decree Article 118-5). Benefit self-pay follows the Enforcement Decree of the National Health Insurance Act, Annex 2: 20% inpatient and 30/40/50/60% outpatient (clinic/hospital/general/tertiary). Crucially, children aged 15 and under pay only 5% for inpatient care (Annex 2, item 3(j), special mark F018) — about a quarter of the adult inpatient copay — and pediatric surgery is done under general anesthesia (an added surcharge). Strabismus surgery is NOT a special-case (sanjeong-teukrye) condition, so ordinary benefit rates apply; if the underlying disease is a separate special case, check those criteria. The annual out-of-pocket ceiling refunds covered self-pay above the income-tier cap (about KRW 900,000-8,430,000 in 2026) but not non-covered costs. The medical-expense tax credit is 15% of spending above 3% of gross salary, with no KRW 7,000,000 cap for the taxpayer, those 65+, the disabled, registered serious-illness patients, or children 6 and under (Income Tax Act Article 59-4). Re-operations and adjustable-suture surgery are covered or non-covered by purpose. This is a planning estimate based on 2026 Korean rules, not medical advice or an insurer decision.

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What is the strabismus surgery cost calculator?

This calculator estimates the real out-of-pocket cost of strabismus (squint) correction surgery in Korea for 2026.
Strabismus — eyes that are misaligned (inward esotropia, outward exotropia, vertical, or paralytic) — is corrected by adjusting the six extraocular muscles that move the eye, a procedure called strabismus surgery or extraocular muscle surgery.
Choose the surgical purpose (therapeutic vs cosmetic), the age band (15-and-under vs adult), and the surgical scope (number of muscles), and it separates the covered benefit from the non-covered portion, then works through the annual out-of-pocket ceiling, private indemnity insurance, and the medical-expense tax credit step by step.

Strabismus surgery has a cost structure unlike other eye surgery.
The single biggest driver is not the technique but WHY the surgery is done — the purpose decides whether National Health Insurance covers it.
A therapeutic case (double vision, paralysis, thyroid eye disease, or pediatric strabismus) is covered and the copay is small, but a purely cosmetic (appearance-only) case with no expected vision recovery is fully non-covered — and it is also excluded from private indemnity insurance and the medical-expense tax credit.

Korea-based estimate. This calculator is built on Korean National Health Insurance rules for 2026 — benefit self-pay rates (Enforcement Decree of the National Health Insurance Act, Annex 2), the reduced 5% inpatient copay for children aged 15 and under (Annex 2, item 3(j), special mark F018), the annual out-of-pocket ceiling, private indemnity insurance, and the medical-expense tax credit (Income Tax Act Article 59-4; cosmetic surgery excluded under Enforcement Decree Article 118-5). Prices are 2026 estimates from public fee data and hospital non-covered price lists; actual costs vary by hospital level, strabismus type, surgical scope, anesthesia, and inpatient days. It is an educational estimate, not medical advice, and does not replace diagnosis, a hospital quote, or an insurer/benefit decision.

Understanding strabismus and extraocular muscle surgery

In strabismus, when one eye looks straight ahead the other turns in, out, up, or down.
By direction it is grouped into esotropia (inward), exotropia (outward), vertical, and cyclotropia; paralytic strabismus is caused by cranial-nerve palsy.

Surgical methods (adjusting the muscles)

  • • Recession: moves an over-strong muscle backward to weaken its pull.
  • • Resection: shortens a weak muscle by removing part of it to strengthen its pull.
  • • Adjustable suture: ties the suture loosely so the alignment can be fine-tuned after surgery — used mainly for adults and re-operations.
  • • Complex surgery: vertical, paralytic, or large-angle strabismus adjusts several extraocular muscles at once.

Pediatric strabismus is usually operated under general anesthesia because early correction matters for binocular and stereo vision development.
Adults have surgery to relieve double vision, reduce eye strain, and improve appearance, sometimes under local anesthesia as day surgery.

The core cost: therapeutic (covered) vs cosmetic (non-covered)

The biggest variable in strabismus surgery cost is not the surgical scope but the purpose.
Korean NHIS benefit criteria cover strabismus surgery only when a medical need is recognized (therapeutic).

When it is covered

  • • Children under 10: vision function can still recover, so it is covered.
  • • Double vision (diplopia): covered when it impairs daily life.
  • • Paralytic strabismus: covered when caused by orbital fracture, trauma, or cranial-nerve palsy.
  • • Systemic/orbital disease: strabismus from thyroid eye disease and similar conditions is covered.

When it is non-covered

  • • Purely cosmetic: an adult with no expected vision/function recovery who wants appearance-only correction is non-covered.
  • • No indemnity payout: the standard indemnity policy excludes “strabismus correction and other visual-system surgery done for appearance, not for vision improvement.”
  • • Cosmetic re-operation: a re-operation for appearance is generally non-covered.

A cosmetic strabismus surgery runs about KRW 1,600,000 for both eyes on hospital non-covered price lists.
By contrast a covered therapeutic surgery costs roughly KRW 300,000–500,000 out of pocket (20% inpatient), and even less for children aged 15 and under.

Children 15 and under: 5% inpatient copay

Pediatric strabismus is the classic covered case, and children get a large inpatient copay reduction.
For children aged 15 and under, the inpatient copay is 5% of the total covered treatment cost.

Self-pay rates at a glance

  • • Adult inpatient: 20% of the total covered treatment cost is the baseline.
  • • Child (15 and under) inpatient: reduced to 5% (Enforcement Decree Annex 2, item 3(j), special mark F018).
  • • Outpatient: 30% clinic, 40% hospital, 50% general, 60% tertiary; the 5% child reduction applies to inpatient care only.
  • • General anesthesia: pediatric strabismus surgery requires it, adding an anesthesia surcharge.

For example, a pediatric strabismus surgery with a covered total of KRW 2,450,000 costs about KRW 122,500 at the 5% inpatient rate versus about KRW 490,000 at the adult 20% rate.
For the same surgery, a child aged 15 or under pays a quarter of the adult inpatient copay.

Lowering the burden: ceiling, insurance, and tax credit

A therapeutic strabismus surgery is reduced by three programs in sequence.
But you must separate what applies to the covered part versus the non-covered part, and to therapeutic versus cosmetic, to predict the real burden.

Three programs — key points

  • • Out-of-pocket ceiling: if annual covered self-pay exceeds the income-tier cap (about KRW 900,000–8,430,000 in 2026), the excess is refunded. Non-covered costs are excluded.
  • • Private indemnity insurance: a therapeutic surgery reimburses covered self-pay and non-covered items by policy generation. A cosmetic surgery is excluded by the policy terms.
  • • Medical-expense tax credit: 15% of medical spending above 3% of gross salary. Expenses of the taxpayer, those 65+, the disabled, registered serious-illness patients, and children aged 6 and under have no KRW 7,000,000 cap (Income Tax Act Article 59-4).
  • • Cosmetic excluded: cosmetic strabismus surgery is excluded from the medical-expense tax credit (Income Tax Act Enforcement Decree Article 118-5).

Unlike cancer, rare, or serious chronic diseases, strabismus surgery is NOT a special-case (sanjeong-teukrye) condition, so ordinary benefit rates apply.
Amounts refunded by the ceiling and reimbursed by private insurance must be excluded from the tax credit to avoid double-counting.

How to use this calculator

Step 1: Surgery and purpose

Pick the scope (single/1-muscle, horizontal/2-muscle, complex/3+, or re-operation) to auto-fill typical inpatient days and cost.
Then set the purpose (therapeutic vs cosmetic), the age band (15-and-under vs adult), and whether general anesthesia is used.

Step 2: Copay conditions

Set the care setting (20% inpatient, 5% for children, etc.), inpatient days, other non-covered items, income tier, and the ceiling.
Choosing cosmetic makes the whole surgery non-covered regardless of the self-pay rate.

Step 3: Insurance and tax credit

Enter your private indemnity insurance generation and gross annual salary, and select whether the patient is the taxpayer, 65+, disabled, a registered serious-illness patient, or 6 and under for the uncapped tax credit.

Step 4: Review results

See total self-pay, therapeutic vs cosmetic, adult 20% vs child 5%, the ceiling refund, private-insurance reimbursement, the tax credit, and the final real burden at a glance.

Frequently asked questions (FAQ)

Q. Is strabismus surgery covered by insurance?

A. It depends on the purpose.
Children under 10, double vision that impairs daily life, traumatic paralytic strabismus, and strabismus from thyroid eye disease are covered; a purely cosmetic (appearance-only) case with no expected vision recovery is non-covered.

Q. Does private insurance cover cosmetic strabismus surgery?

A. No.
The standard indemnity policy explicitly excludes “strabismus correction and other visual-system surgery for appearance, not vision improvement,” and cosmetic non-covered costs are also excluded from the tax credit.

Q. How much cheaper is my child’s surgery?

A. Children aged 15 and under have their inpatient copay reduced to 5% (Annex 2, item 3(j), special mark F018).
Compared with the adult 20% inpatient rate, the covered copay drops to about a quarter.

Q. Is strabismus surgery a special case (sanjeong-teukrye)?

A. Strabismus surgery itself is not a special-case condition (cancer, rare, or serious chronic disease).
Ordinary benefit rates apply (20% inpatient, 5% for children 15 and under); if the underlying disease is a separate special case, check those criteria.

Q. Is a re-operation covered?

A. Re-operations and adjustable-suture surgery are covered or non-covered depending on purpose.
A therapeutic re-operation for recurrence or overcorrection can be covered, but a cosmetic re-operation may be non-covered — confirm with your surgeon and the NHIS.

Important notes

  • Reference estimate: cost varies with hospital level, strabismus type, surgical scope, anesthesia, and inpatient days; this calculator uses 2026 public prices and statistics.
  • Purpose is decisive: the same surgery is covered when therapeutic and non-covered when purely cosmetic. Confirm functional indications (such as diplopia) at your consultation.
  • Cosmetic is excluded: cosmetic strabismus surgery has no indemnity payout and is not eligible for the medical-expense tax credit (Enforcement Decree Article 118-5).
  • Rules change: fee schedules, self-pay rates, the ceiling, and policy terms change yearly — check the latest rules and a hospital quote.

Estimate your strabismus surgery cost now

Enter the purpose, age, and surgical scope to see the real burden of therapeutic (covered) vs cosmetic (non-covered) and adult vs child.

Compare the out-of-pocket ceiling refund and private-insurance and tax-credit relief in one place.