Do you have poor vision from keratoconus? Keranaturale may help you get better quality vision or may improve your contact lens wear tolerance.

What is KeraNaturale?

Keranatural Corneal Allograft Intracorneal Ring Segments (CAIRS) is a revolutionary technique to help people with Keratoconus see better. It uses donor tissue to create a natural ring in the cornea. This is more effective and decreases some of the risks associate with the older synthetic materials like Intacs, Ferrara and Kerarings. It can also be adjusted or removed.

To see if this is right for you, Dr. Arbabi will carefully examine your eyes and uses a special 3D mapping and imaging of your cornea. If it’s a good fit, he will use a high-tech femtosecond laser to implant this natural ring and customise the ring to your individual cornea.

 Keranatural works by making the cornea less steep, which reduces your corneal irragularities and astigmatism. The goal of the treatment is to make your vision better and improve how well you can see with your glass. This is not a procedure to make you classes free.


Advantages of Keranaturale implants

Single Step Treatment

Rapid and painless treatment

The advanced femtosecond laser makes a precise tunnel in cornea in less than 10 seconds followed by another 2-3 minutes to slide and position the ring in the exact place

Quick recovery

Quick recovery

It is a minimally invasive surgical technique allowing patients to quickly resume their normal activities. You may see some improvement of vision immediately but usually it takes 3 -6 months for full visual recovery


The Keranaturale can easily be taken out if required and the cornea returns to its normal state.


No other surgeries needed

In some cases, it may delay or eliminate the need for other major surgeries such as corneal transplant.

I am I suitable for Keranaturale?

Take our online suitability test

1 Min. Assessment

If you have keratoconus and answer yes to the below questions you may be a good candidate but Dr. Arbabi will perform a comprehensive assessment to see if you are likely to benefit from this:

What to Expect

On the Day of Your Treatment

laser eye surgery
1. Warm welcome
You will meet with Dr. Arbabi who will review your clinical measurements, examine you and make you feel at ease.
laser eye surgery
2. Ensuring you are comfortable
Local anaesthetics eye drops will be instilled in your eyes to ensure they are completely numb and comfortable throughout the procedure.
3. Keraring implant
An advanced femtosecond laser is used to create precise tunnels in the cornea. This usually takes less than 10 seconds. One or two semi-circular rings are implanted in the cornea. This takes 2-3 minutes.

After the Treatment

after treatment care
1. What to Expect
It is not unusual for your eyes to feel slightly gritty and light sensitive after the procedure, but this will quickly subside, and the eye should feel better by the next day.
after treatment care
2. Aftercare drops and advice
You will be given your aftercare drops and advice. You will be asked to wear a pair of sunglasses when making your way back to home and to stop rubbing your eye for at least one week. Avoid make up on face for one week and on your eyes for two weeks.
after treatment care
3. The future

You may see some improvement of vision immediately but usually it takes 3-6 months for full visual recovery. Most people can expect to return to office-based work within first 24 to 48h after surgery. However, your glasses prescription may change. You should be able to resume most sports activities within 2 to 4 weeks. As part of Dr. Arbabi’s unique service you will be given his personal phone number to call or WhatsApp me directly if you have any concern or want to discuss anything about your procedure.

More information

KeraNaturale® step by step answer to all your questions

Alternatives include:

  • Staying as you are with wearing your current glasses or contact lenses
  • Some patients may be suitable for an intraocular lens implant such as toric ICL implant. 
  • In very advanced cases patients may require a corneal transplant. 

It is a safe procedure but like any other operation there are risks. The risks include:

  • Glare and halos: Some patients may experience a mild degree of glare. The risk of glare and haloes is signofocantly less with Keranaturale compare to older generation plastic rings (INTACS).  If any glare occurs, it usually settles down and resolves with time. However, if this was too troublesome or not settling, the Keranaturale can be removed
  • Risk of immune reaction is very low as the tissue is biocompatible and has no cells
  • The result are not always predictable. It still continues to be an art as well as a science. Some patients experience significant improvement while others may benefit very little or not at all. Based on Dr. Arbabi’s extensive experience in patients with keratoconus and the available guidelines, he will explain the likelihood of the procedure benefitting your eye.
  • Small risk of infection or scarring
  • Small risk it may make your vision worse 
  • Very small risk of corneal perforation 
  • Change of glasses prescription or worsening of vision

Discover the freedom from glasses or contact lenses

Request a Callback

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