A corneal transplant is a surgical procedure where a clear window of healthy donor corneal tissue replaces a damaged or scarred cornea, restoring your vision. If you have corneal scarring, keratoconus, or other corneal disease, this procedure may help you see clearly again.
This guide walks through what corneal transplant surgery actually involves, the types of keratoplasty, what it costs in India, how long recovery takes, and what patients in Kerala and abroad should know before consulting an ophthalmologist.
What Is Corneal Transplant Surgery (Keratoplasty)?
Corneal transplant surgery is a procedure that replaces all or part of a damaged, diseased, or scarred cornea with healthy donor corneal tissue sourced from a certified eye bank. Because the cornea has no blood supply, it is one of the few transplanted tissues that does not require blood-type matching between donor and recipient, a key reason keratoplasty has one of the highest success rates of any transplant surgery.
The surgery does not cure the underlying eye disease itself. It works by replacing the specific corneal layer that has lost its clarity or shape, allowing light to focus properly on the retina again.
Depending on which layer is affected, the outer stroma, the innermost endothelium, or the full thickness of the cornea, surgeons choose from several distinct keratoplasty techniques, each with a different recovery profile and level of surgical precision.
Also Read: Refractive Surgery Alternatives: LASIK vs PRK vs ICL Comparison
When Is a Corneal Transplant Necessary?
An ophthalmologist typically recommends corneal transplant surgery only once glasses, contact lenses, or medication can no longer correct vision or manage pain. Common conditions include:
-
Keratoconus: progressive thinning that causes the cornea to bulge into a cone shape.
-
Fuchs' endothelial dystrophy: gradual loss of the inner cells that keep the cornea clear.
-
Corneal scarring: from past infections, injuries, or previous eye surgery.
-
Bullous keratopathy: corneal swelling, often following complicated cataract surgery.
-
Corneal ulcers and infectious keratitis: severe infections that damage corneal tissue.
-
Inherited corneal dystrophies affecting corneal clarity.
-
Chemical burns or traumatic eye injury.
-
A previously failed corneal graft requiring a repeat transplant
Types of Corneal Transplant Surgery
Not all corneal transplants are the same. Ophthalmologists select the surgical technique based on exactly which layer of the cornea, the epithelium, stroma, or endothelium, has been damaged.
1. Penetrating Keratoplasty (PK)
The traditional, full-thickness approach. PK involves removing the entire central portion of the diseased cornea and replacing it with a matching disc of donor tissue, secured with fine sutures. It remains the standard option when damage extends through every corneal layer, advanced keratoconus, dense scarring, or severe trauma, though it carries the longest recovery period of all keratoplasty types.
2. Deep Anterior Lamellar Keratoplasty (DALK)
DALK replaces only the front and middle layers of the cornea while preserving the patient's own healthy endothelium. Because the innermost, most immunologically active layer is never touched, the risk of graft rejection drops significantly compared to PK, making DALK a preferred option for keratoconus and anterior corneal scarring.
3. Endothelial Keratoplasty; DSEK/DSAEK and DMEK
These minimally invasive techniques replace only the innermost endothelial layer through a small incision, leaving the rest of the cornea untouched. DSEK/DSAEK transplants a thin layer of donor stroma along with the endothelium, while DMEK transplants an even thinner layer, just the Descemet's membrane and endothelium, for sharper visual outcomes, though it demands greater surgical precision. Both are typically used for Fuchs' dystrophy and bullous keratopathy, and both offer noticeably faster recovery than full-thickness surgery.
4. Artificial Cornea (Keratoprosthesis)
Reserved for eyes that have already rejected multiple donor grafts, or where donor tissue is unlikely to survive, such as in severe autoimmune or chemically injured eyes, a keratoprosthesis uses a synthetic optical device in place of human donor tissue.
| Technique | What's Replaced | Best Suited For | **Typical Recovery ** |
|---|---|---|---|
| Penetrating Keratoplasty (PK) | Full thickness (all layers) | Advanced keratoconus, deep scarring, trauma | 12–18 months |
| DALK | Front/middle layers; endothelium preserved | Keratoconus, anterior scarring | 6–12 months |
| DSEK/DSAEK | Endothelium + thin stromal layer | Fuchs' dystrophy, bullous keratopathy | 2–4 months |
| DMEK | Endothelium + Descemet's membrane only | Fuchs' dystrophy (early-moderate) | 1–3 months |
| Keratoprosthesis | Entire cornea (synthetic) | Repeat graft failure, severe autoimmune disease | Varies; close monitoring |
How Corneal Transplant Surgery Is Performed: Step by Step
Corneal transplant surgery is tailored to the affected layer of the cornea, so the process begins with careful evaluation and donor tissue selection. The main stages are outlined below.
1. Pre-Operative Evaluation and Donor Matching
Before surgery, the ophthalmologist conducts a detailed evaluation, corneal topography, specular microscopy, slit-lamp examination, and eye measurements, to determine the exact type and size of donor tissue required. Donor corneas are screened for infectious disease and assessed for endothelial cell quality by an accredited eye bank before approval for transplantation.
2. On the Day of Surgery
Corneal transplant surgery is usually performed as a day-care procedure under local anaesthesia with sedation, though general anaesthesia may be used for children or anxious patients. The surgeon removes the diseased portion of the cornea using a precision trephine or femtosecond laser and positions the donor tissue, securing it with sutures (in PK and DALK) or an air/gas bubble (in endothelial keratoplasty) while it adheres.
3. Anaesthesia and Duration
The procedure typically takes 45–90 minutes per eye. Most patients go home the same day or after a short overnight observation, with a protective shield over the eye and a course of anti-inflammatory and antibiotic drops starting immediately.
Corneal Transplant Surgery Cost in India and Kerala
One reason India, and Kerala in particular, has become a preferred destination for corneal transplant surgery, for domestic patients as well as NRIs and Gulf-based international patients, is cost.
In India, corneal transplant surgery typically costs between ₹40,000 and ₹1,50,000 per eye depending on the technique used, compared to $10,000–$30,000 in the United States for a comparable procedure.
| Procedure | Approx. CGHS Rate Per Eye* |
|---|---|
| Penetrating Keratoplasty (PK) | ₹35,000 |
| DALK (Deep Anterior Lamellar Keratoplasty) | ₹43,000 |
| DSAEK / DMEK | ₹43,000 |
| Penetrating Keratoplasty + Glaucoma Surgery | ₹35,000 |
| Penetrating Keratoplasty + Vitrectomy | ₹35,000 |
| Penetrating Keratoplasty + IOL Implantation | ₹35,000 |
Figures are indicative and compiled from published patient-cost guides (CGHS package rates); actual pricing depends on the hospital, surgeon, and individual case.
Several factors influence the final cost: the technique used (endothelial and lamellar procedures generally cost more than PK due to the precision equipment involved), the hospital's accreditation and infrastructure, the surgeon's experience, whether the donor cornea is sourced locally or imported, and any pre-existing eye conditions requiring additional treatment. Government health schemes and select insurance policies may cover part of the cost for eligible patients in Kerala, so it's worth confirming coverage directly with the hospital's billing team during consultation.
Risks, Success Rate and Signs of Graft Rejection
Corneal transplant surgery has one of the highest success rates of any transplant procedure, largely because the cornea's lack of blood vessels makes it less prone to immune rejection than organs like the kidney or liver. Still, graft rejection can occur, most commonly within the first two years, and is reversible in most cases if caught early.
Patients should seek prompt medical attention if they notice the classic warning signs, often remembered as RSVP: Redness, Sensitivity to light, Vision changes, or Pain. Other risks include infection, elevated eye pressure (glaucoma), induced astigmatism, and, rarely, graft failure requiring a repeat transplant. Regular follow-up and strict adherence to prescribed steroid eye drops significantly reduce these risks.
Why Patients From Kerala and Abroad Choose Meitra Hospital for Eye Care
For patients in Kozhikode and across Kerala evaluating where to get a corneal condition assessed, Meitra Hospital's Ophthalmology department offers a structured starting point. The hospital is NABH-accredited and has dedicated diagnostic infrastructure to support detailed evaluation of corneal and other eye conditions, including keratoconus.
Key facilities include:
- Humphrey Field Analyzer for visual field testing
- Non-contact tonometry for intraocular pressure measurement
- Autorefractometry and keratometry for refractive and corneal measurements
- Slit-lamp examination for detailed assessment of the eye's anterior structures
- A-scan biometry for ocular measurements, particularly when surgical planning requires it
Patients experiencing symptoms such as blurred vision, glare sensitivity, or changes associated with keratoconus can undergo an ophthalmic assessment to determine the appropriate next step. Depending on the findings, this may involve observation, medical management, further diagnostic testing, or consideration of surgical options.
Meitra's wider hospital infrastructure can also be useful for patients with health conditions that may influence eye treatment or recovery:
- 220+ rooms and seven operation theatres
- Multiple Centres of Excellence across medical specialties
- Access to multidisciplinary care for patients with conditions such as diabetes or autoimmune disorders
For patients travelling from outside Kozhikode, including Gulf-based NRIs, having ophthalmology services alongside other specialist departments can make coordinating evaluation and treatment more convenient. Patients exploring options for a corneal condition can contact Meitra Hospital to discuss their symptoms and arrange an ophthalmology consultation.
Also Read: Which Is the Best LASIK Clinic in Kozhikode? 2026 Guide
Conclusion
Corneal transplant surgery has evolved considerably over the past two decades, from a single full-thickness technique into a family of precise, layer-specific procedures that offer faster recovery and lower rejection rates than ever before. Choosing the right type of keratoplasty depends entirely on which corneal layer is affected, and that decision should always follow a detailed evaluation by a qualified ophthalmologist.
Whether the diagnosis is keratoconus, Fuchs' dystrophy, or corneal scarring, timely evaluation gives patients the widest range of treatment options and the best chance at full visual recovery.
If you're experiencing blurred vision, light sensitivity, or have been advised to consider a corneal evaluation, Chat with our medical assistant for quick answers on appointments, costs, and doctor availability.
Medical Disclaimer: This article is for general informational purposes only and does not constitute medical advice. Decisions about corneal transplant surgery should always be made in consultation with a qualified ophthalmologist after a complete eye examination. Individual outcomes, costs, and recovery timelines vary based on diagnosis, eye health, and surgical technique. For a personal evaluation, please consult Meitra Hospital's ophthalmology team directly.
