The cornea is the transparent, dome-shaped outermost layer of the eye. Light enters the eye through the cornea, which refracts it to produce clear vision. In a healthy eye, this layer allows light to be focused accurately onto the retina.
Keratoconus is a progressive eye disease in which the cornea thins and bulges forward, often accompanied by myopia and astigmatism. This deformation prevents light from focusing properly on the retina, resulting in vision loss. One of the primary causes of keratoconus is frequent eye rubbing—which applies pressure and disrupts the cornea’s structure.
Genetics also play a significant role in disease development, and patients with a family history of keratoconus should undergo regular eye exams. Eye surgeries or physical trauma to the cornea can also increase the risk. Although the exact causes remain unclear, corneal transplantation used to be the only treatment for advanced cases.
KeraNatural® consists of sterile allograft (donor) rings and segments made from fully biological, human-derived tissue used in keratoconus treatment. Developed by VisionGift, an FDA-registered and EBAA-accredited eye bank in the USA, the product is processed in ISO-certified labs and sterilized using a patented method, with a shelf life of up to 2 years.
KeraNatural® is a plastic-free, highly biocompatible solution that improves visual acuity and enhances daily life for keratoconus patients, offering a natural alternative to corneal transplants.
Unlike synthetic corneal rings, KeraNatural® uses natural donor tissue, which reduces risks of infection, corneal melting, and inflammation, and has a lower rejection rate due to its biological compatibility. It is also reversible and adjustable—allowing it to be repositioned or removed if necessary.
In the procedure, a ring made from human collagen is implanted into the cornea using a laser-created tunnel. KeraNatural is among the most effective methods to flatten and strengthen the cornea and restore vision.
As with any surgical procedure, risks exist. Patients considering allograft corneal ring treatment should consult with their ophthalmologist regarding benefits and potential risks.
Made from human collagen
Highly tolerated by the body
Can be repositioned or removed if necessary
Minimal discomfort, fast healing
It helps reduce myopia and astigmatism by supporting the structure of the cornea.
KeraNatural® is ideal for patients who:
Have mild to moderate keratoconus
Struggle with contact lens use
Seek improved visual quality
Prefer a less invasive solution before considering corneal transplant
Each patient’s eligibility should be determined by a specialist based on corneal thickness, disease stage, and eye anatomy.
Improved Vision: Most patients report improved vision after the procedure, though outcomes vary depending on disease severity.
Better Tolerance to Glasses/Lenses: Helps reduce or eliminate the need for visual aids in patients struggling with them.
Tailored Results: Outcomes may vary based on individual conditions; consultation with an eye specialist is essential.
Reduces Foreign Body Reactions: Involves implantation of sterilized, tested human corneal tissue not recognized as a foreign object.
Minimally Invasive Procedure: A laser creates a tunnel in 6–8 seconds; collagen implantation takes minutes under topical anesthesia.
No Sutures: No stitches needed—promotes faster healing.
Quick Recovery: Patients typically go home the same day and return for a follow-up the next.
Standard Risks: Comparable to other ocular surgeries, manageable with proper care.
Low Risk of Vision Loss: Surgeons can adjust or remove the segment if needed, minimizing permanent visual impact.
