Why would someone need a second corneal transplant?

Most often graft rejection or gradual endothelial failure, where the graft loses its ability to keep the cornea clear. Less commonly the original disease recurs in the donor tissue, or an injury or infection damages the graft. Notably, poor vision from irregular astigmatism after a graft is a different situation \u2014 that usually calls for a lens rather than more surgery.

Can you wear a contact lens over a corneal transplant?

Yes, and it is routine once your surgeon confirms the graft is stable and sutures are no longer a factor. A graft surface is rarely optically perfect, so a specialty lens over it is common and is not a sign anything went wrong. Scleral lenses in particular vault the whole graft\u2013host junction, which is usually what defeats a corneal rigid lens.

Is a scleral lens safe on a transplanted cornea?

In appropriately selected eyes, yes, and it is widely done \u2014 but it needs care and follow-up rather than a standard fitting. The graft endothelium is the consideration, so the fit is designed to avoid excessive vault and wearing time is built up deliberately. We fit these in co-management with your corneal surgeon, not around them.

Will a lens mean I can avoid another transplant?

It depends entirely on why the vision is poor. If the graft is clear and healthy and the problem is irregular astigmatism, a lens addresses exactly that and further surgery may not be needed. If the graft itself is failing \u2014 clouding, swelling, rejection \u2014 no lens fixes that, and it is a surgical question. Working out which of the two you are dealing with is the first useful step.

How long after a transplant can I be fitted?

When your surgeon says the cornea has settled, which is usually a matter of months rather than weeks, and generally after sutures are no longer influencing the shape. Fitting too early means fitting a shape that is still moving. We coordinate the timing with your surgeon rather than working to a fixed calendar.

How Many Corneal Transplants Can You Have?

There is no fixed number. Repeat corneal transplants are performed routinely, and plenty of people are living with a second or third graft.

But “can you” and “should you” are different questions, and the more useful answer is this: each graft is generally a harder ask than the one before it, which is exactly why it is worth being certain that surgery is what the eye actually needs.

Why a repeat graft is a bigger ask

A re-grafted eye is not the same proposition as a first-time one.

The eye has been sensitised. Having already been exposed to donor tissue, the immune system is more primed to react to the next graft. Rejection risk goes up with each subsequent transplant rather than staying flat.

The tissue has been operated on. Scarring at the graft–host junction, changes to the surrounding cornea, and any vascularisation that has developed all make the surgery more technically demanding and the healing less predictable.

The endothelium is the limiting resource. Corneal endothelial cells do not regenerate meaningfully in humans. Every intraocular procedure costs some of them, and when the count falls too low the cornea can no longer keep itself clear. That constraint is what ultimately governs how many times this can be done.

Expected graft survival is generally shorter with each successive transplant. Your surgeon is the right person for the specifics in your eye, because the numbers depend heavily on why the previous graft failed and on the health of the rest of the eye.

The distinction that matters most

This is the part worth reading twice, because it changes what happens next.

A failing graft and a clear graft with poor vision are entirely different problems.

A failing graft clouds, swells, or shows signs of rejection — redness, pain, light sensitivity, a sudden drop in vision. The tissue itself is losing function. No contact lens fixes that, and rejection in particular is a same-day surgical matter, not something to monitor at home.

A clear, healthy graft with disappointing vision is usually an optical problem, not a tissue problem. The transplant did its job — the cornea is transparent — but the surface is irregular. Grafts heal with astigmatism, the junction between donor and host tissue is rarely perfectly smooth, and suture effects can persist.

That second situation is very common and is routinely mistaken for a disappointing outcome. It is not. It is an unfinished one.

Why grafts end up irregular

A corneal transplant restores clarity. It was never able to guarantee a perfectly regular shape.

The donor button is sutured into the host cornea, and healing pulls unevenly across that circular join. The result is frequently high and irregular astigmatism — the kind glasses cannot correct, because a spectacle lens bends light uniformly and a post-graft cornea does not.

So patients emerge from a technically successful transplant with a clear cornea and vision that still is not usable in glasses. Many are told, or assume, that this is simply the result they got.

What a lens does over a graft

A scleral lens vaults over the entire cornea, including the graft–host junction, and rests on the sclera. Tears fill the space, and the smooth front surface of the lens becomes the eye’s refracting surface.

That matters here more than in almost any other situation, because the junction is the specific thing that defeats a corneal rigid lens — an RGP has to sit on the cornea, and a stepped, irregular junction is precisely what it cannot sit on comfortably or stably. A scleral lens never touches it.

Patients who were told nothing more could be done for a transplanted eye frequently see well in one. Being honest about the caveats:

It needs your surgeon’s agreement that the graft is stable and sutures are no longer influencing the shape.
The endothelium is the consideration in fitting design, so vault and wearing time are approached conservatively and followed more closely than a standard fitting.
If the graft is failing, a lens is not the answer and nobody should pretend otherwise.

Before a second transplant, ask one question

If a regraft has been raised and your graft is clear rather than cloudy, it is entirely reasonable to ask: is the problem the graft, or the shape of it?

If it is the shape, a specialty lens addresses exactly that, and it does so without spending endothelial cells or sensitising the eye further. If the graft itself is failing, that is a surgical question and a lens will not change it.

Nobody should have a second transplant for a problem a lens would have solved. Equally, nobody should try to manage a failing graft with a lens. Telling the two apart is a short appointment.

When to seek care urgently

Graft rejection is time-critical and treatable when caught early. Contact your surgeon the same day for:

A sudden drop in vision
New redness or pain in the operated eye
New light sensitivity
The cornea looking hazy or cloudy

Do not wait for a routine appointment, and do not attempt to manage any of these with a lens.

Told the vision after your transplant is as good as it gets?

Dr. Shira Kresch, OD, MS, FAAO fits lenses over grafts in co-management with corneal surgeons across Metro Detroit, from our Southfield office. A first specialty consultation is free, and you will get a straight answer about whether the limit is the graft or its shape.

Book a Free Consultation or call (248) 545-2800

Frequently Asked Questions

How many corneal transplants can you have?: There is no fixed limit, and repeat grafts are performed routinely. But each one is generally a harder proposition than the last \u2014 a re-grafted eye carries a higher rejection risk and a shorter expected graft survival, because the eye has already been sensitised and the surrounding tissue has been operated on before. Surgeons weigh that carefully rather than treating a regraft as a simple repeat.
Why would someone need a second corneal transplant?: Most often graft rejection or gradual endothelial failure, where the graft loses its ability to keep the cornea clear. Less commonly the original disease recurs in the donor tissue, or an injury or infection damages the graft. Notably, poor vision from irregular astigmatism after a graft is a different situation \u2014 that usually calls for a lens rather than more surgery.
Can you wear a contact lens over a corneal transplant?: Yes, and it is routine once your surgeon confirms the graft is stable and sutures are no longer a factor. A graft surface is rarely optically perfect, so a specialty lens over it is common and is not a sign anything went wrong. Scleral lenses in particular vault the whole graft\u2013host junction, which is usually what defeats a corneal rigid lens.
Is a scleral lens safe on a transplanted cornea?: In appropriately selected eyes, yes, and it is widely done \u2014 but it needs care and follow-up rather than a standard fitting. The graft endothelium is the consideration, so the fit is designed to avoid excessive vault and wearing time is built up deliberately. We fit these in co-management with your corneal surgeon, not around them.
Will a lens mean I can avoid another transplant?: It depends entirely on why the vision is poor. If the graft is clear and healthy and the problem is irregular astigmatism, a lens addresses exactly that and further surgery may not be needed. If the graft itself is failing \u2014 clouding, swelling, rejection \u2014 no lens fixes that, and it is a surgical question. Working out which of the two you are dealing with is the first useful step.
How long after a transplant can I be fitted?: When your surgeon says the cornea has settled, which is usually a matter of months rather than weeks, and generally after sutures are no longer influencing the shape. Fitting too early means fitting a shape that is still moving. We coordinate the timing with your surgeon rather than working to a fixed calendar.