Scleral Lenses After Corneal Transplant and Corneal Scarring

Corneal transplant surgery and corneal scarring can leave the front surface of the eye irregular, even when the eye has healed. Patients may still experience blurry vision, ghosting, glare, irregular astigmatism, fluctuating clarity, or difficulty wearing standard contact lenses. For selected patients, scleral lenses may help provide visual rehabilitation and improved comfort.

Dr. Edward Boshnick evaluates post-transplant and corneal scar patients with advanced corneal imaging, ocular surface assessment, and diagnostic specialty lens fitting. The goal is to understand the shape and health of the cornea, protect sensitive tissue, and determine whether a custom scleral lens, EyePrintPRO, wavefront-guided scleral lens, or another design may be appropriate.

Why vision may remain irregular after a corneal transplant

A corneal transplant can replace diseased or damaged corneal tissue, but it does not always create a perfectly smooth optical surface. Stitches, wound healing, graft-host junction shape, corneal curvature differences, and residual scarring can create irregular astigmatism or visual distortion.

Some patients do well with glasses or standard contact lenses after healing. Others need a more customized approach because the corneal shape remains too irregular for simple correction.

How corneal scarring can affect vision

Corneal scarring can come from infection, trauma, inflammation, prior surgery, keratoconus, contact lens complications, chemical injury, or other corneal disease. Scarring may scatter light, reduce contrast, and create irregular astigmatism. If the surface is uneven, glasses may not fully sharpen vision.

Scleral lenses cannot remove a scar. They may help when part of the visual problem comes from surface irregularity or tear film instability. Vision can still be limited by dense central scarring, retinal disease, optic nerve disease, or other eye conditions.

How scleral lenses may help after transplant or scarring

A scleral lens is a custom gas-permeable lens that rests on the sclera, the white part of the eye, and vaults over the cornea. This can be helpful for post-transplant and scarred corneas because the lens does not need to align directly with the most irregular corneal tissue.

Vaulting over irregular tissue: the lens can be designed to clear the graft, scar, or irregular corneal surface.
Smoother optical surface: the front of the lens may reduce distortion caused by irregular astigmatism.
Improved stability: the larger scleral design may be more stable than smaller corneal lenses on complex eyes.
Ocular surface support: the fluid reservoir beneath the lens may help protect sensitive corneal tissue during wear for selected patients.

Scleral lenses require careful fitting and monitoring after corneal transplant. The health of the graft, corneal thickness, endothelial function, oxygen needs, ocular surface, and risk profile all matter.

Patients who may be evaluated

patients with irregular astigmatism after penetrating keratoplasty
patients with visual distortion after partial-thickness corneal transplant
patients with corneal scarring from infection, injury, inflammation, or prior surgery
patients with keratoconus who had corneal transplant surgery
patients with post-transplant contact lens intolerance
patients with graft-host junction irregularity
patients with dry eye or ocular surface sensitivity after corneal surgery

Dr. Boshnick’s evaluation process

1. Surgical and medical history

The evaluation includes transplant type, surgery date, graft history, rejection history, medication use, prior lens wear, corneal disease history, and current symptoms.

2. Corneal imaging

Corneal topography or tomography helps identify irregular astigmatism, graft-host junction shape, steep and flat areas, scarring patterns, and other details that influence lens design.

3. Ocular surface and graft assessment

The cornea must be evaluated carefully for staining, dryness, inflammation, epithelial fragility, graft clarity, and other findings that may affect safety and comfort.

4. Diagnostic lens fitting

Diagnostic scleral lenses help evaluate vault, landing, movement, comfort, and vision. Post-transplant eyes may require more conservative fitting decisions and careful follow-up.

5. Advanced designs when needed

Complex grafts or scarred corneas may need advanced customization. Depending on the eye, Dr. Boshnick may consider EyePrintPRO, wavefront scleral lenses, or additional diagnostic technology.

Scleral lenses compared with other post-transplant options

Option	Possible role after transplant or scarring
Glasses	May help mild regular astigmatism but often cannot fully correct irregular graft or scar optics.
Soft contact lenses	May help selected mild cases but often drape over corneal irregularity.
Corneal gas-permeable lenses	May provide good optics for some patients but can decenter or feel uncomfortable on complex graft shapes.
Hybrid lenses	May help some patients who need rigid optics with a soft skirt design.
Scleral lenses	May vault over the cornea and provide stable optics without relying on direct corneal alignment.
Surgical or medical co-management	May be needed if graft health, scarring, rejection risk, or corneal disease requires medical or surgical attention.

What patients should expect

Post-transplant and corneal scarring cases are often complex. A successful fitting may require multiple visits, diagnostic lenses, customized manufacturing, handling training, and careful follow-up. Some patients may also need ongoing care from a corneal specialist.

The best outcome depends on graft health, scar location and density, corneal shape, tear film quality, eye pressure history, retinal and optic nerve health, and the patient’s ability to safely handle and care for lenses.

Frequently asked questions

Can scleral lenses help after corneal transplant?

They may help selected post-transplant patients by vaulting over irregular corneal tissue and creating a smoother optical surface. A careful examination is needed to determine candidacy and safety.

Can scleral lenses help corneal scarring?

They may help when vision is reduced by irregular corneal shape around or over a scar. Dense central scarring may still limit vision, even with a well-fit lens.

Are scleral lenses safe for a corneal graft?

They can be used for selected graft patients, but fitting must be cautious and follow-up is important. Graft health, oxygen needs, corneal thickness, ocular surface condition, and medical history all matter.

How long after transplant can scleral lenses be fit?

Timing depends on healing, suture status, graft stability, corneal specialist guidance, and the eye’s health. Patients should not begin specialty lens wear until the eye is ready and appropriately evaluated.

Related Eye Freedom resources

Medical sources

This page is educational and is not a diagnosis or treatment plan. A specialty examination is needed to determine whether scleral lenses are appropriate after corneal transplant or for corneal scarring.