Nobody wants to hear the words corneal transplant. I get that. Most people hear them after years of fighting with a cornea that won't behave, and the first question is always the same. Do I really need it? So here's the short version. A surgeon takes out the damaged part of your cornea and puts in healthy tissue from a donor. You need one when the cornea is so scarred, swollen or thin that glasses, lenses and drops can't give you useful sight any more. Does it last? Often for years, sometimes for decades, depending on what went wrong in the first place. We plan every case at our cornea treatment service, starting with a scan on the Pentacam HR, and we're a HOTA approved centre for this surgery.
Dr. Vaishal Kenia, Chairman and Medical Director at Eye Hospital in Mumbai, says: "I'll be straight with you. The word transplant scares people more than it should. What we're really doing is replacing a window that has gone cloudy. If the whole window is bad, we change all of it. But most of the time only one layer is bad, the front or the back, and then we change only that layer. It heals quicker and the body is less likely to fight it. So before anything else I want to know which layer has failed. That decides the surgery, and honestly it decides how well you'll see afterwards."
When Is a Corneal Transplant Needed?
Advanced Keratoconus
Most people with keratoconus never need a transplant. Never. But a few do, when the cone gets so steep that no lens will sit on it, or when the tip scars over. By then cross-linking and special lenses have usually been tried. This is exactly why our keratoconus clinic keeps going on about early scans.
Scars From Infection or Injury
A corneal ulcer that took too long to heal. A chemical splash. A cricket ball, a flying splinter. These can leave a white scar sitting right over the pupil, and no glasses in the world see through a scar. If it just happened, rinse the eye and come to our 24x7 emergency eye care desk. Fast treatment can save you the graft.
A Failing Inner Layer
At the back of the cornea there's a layer of cells that works like a pump. It keeps the cornea dry and clear. When those cells die off, because of Fuchs' dystrophy or after cataract surgery or an injury, fluid builds up and the cornea turns hazy. Sometimes painful too. We count the cells with specular microscopy, and often it's just this thin layer that needs replacing.
A Graft That Has Failed
Grafts can cloud up years later. A second one is possible, though the odds aren't quite as good as the first time. A few rare inherited dystrophies, and corneas that have thinned badly or even perforated, make up the rest. So when is a corneal transplant needed in your eye? The scans decide, not a rule of thumb. Book a consultation and find out.
How Is the Corneal Transplant Procedure Done?
Checking You First
Before any corneal transplant surgery, we map your cornea properly. Thickness, shape, the back layer. An OCT scan shows which layers are scarred or swollen. We also hunt for anything that could spoil the healing, like dry eyes, glaucoma, or an infection that's still active.
Choosing the Layer
Three main routes. Full thickness, the whole cornea. DALK, the front layers only, keeping your own back layer. And DSAEK or DMEK, only the back layer, with no big stitches. The choice depends on where the damage is. Our FEMTO Z8 NEO femtosecond laser is used for some corneal transplant procedures, to cut with great precision.
On the Day
The tissue comes from an eye bank, from a person who chose to donate. That's why eye donation matters so much, because nothing else can replace it. Usually it's local anaesthesia with sedation, and the operation takes an hour or two. Full thickness grafts get stitches. The back layer ones are held in place by an air bubble, so you may have to lie flat for a day or two.
Recovery and Aftercare
You go home with a shield on and a bag of drops. Don't rub. Not once. No swimming, no heavy lifting for a while. Sight is blurry at first and gets better over weeks to months, and full thickness grafts are slower because the stitches keep reshaping the cornea. Book your follow ups and keep them.
How Long Does a Corneal Transplant Last?
Typical Lifespan
There's no single number, sorry. Plenty of grafts done for keratoconus last twenty years or more, and many last a lifetime. Back layer grafts often give you a decade or two, and the numbers keep improving. Eyes with infection scars or an earlier failed graft tend to do worse. We keep checking the graft for years at our cornea treatment service, which is how problems get caught early.
Rejection and Its Warning Signs
Sometimes the body decides the donor tissue is foreign and goes after it. It can be months, even years later. The signs are a red eye, light that hurts, pain, vision that suddenly clouds or drops. It's treatable if you're quick. Don't wait out the weekend. Come the same day.
What You Can Do to Protect the Graft
Use the drops exactly as told, even when the eye looks perfect. Some people need steroid drops for months, some for much longer. Don't rub. Wear protective glasses on the bike and for sport. Keep your appointments. Your surgeon will tell you when you can stop each drop, and you can read about Dr. Vaishal Kenia and the team on our site.
What Makes Some Grafts Riskier
New blood vessels in the cornea, an earlier failed graft, a herpes infection, high eye pressure. Pressure is the sneaky one, so our glaucoma clinic checks it alongside the graft. Dry eyes and lid trouble stress the surface too, so we treat those as well.
