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Keratoconus vision correction with Femto-CAIRS

CAIRS

In 2016, Dr. Soosan Jacob from India developed Corneal Allogenic Intrastromal Ring Segments (CAIRS).  This method utilizes segments created from human donor cornea tissue, aiming to reduce the complications associated with PMMA. The creation of the tunnel, however, was still performed manually, which can be challenging in very thin keratoocnus corneas.

Adding the precision of the femtosecond laser:
All Femto-CAIRS

The CAIRS technique was further refined by Professor Shady Awwad from Lebanon, where he enhanced the CAIRS procedure by utilizing femtosecond laser technologyto precisely prepare the ring segment from donor human cornea tissue. He also used the same femtosecond laser to create the tunnel in a pre-determined region of the patient’s cornea to implant these ring segment. This procedure was named “All Femto-CAIRS.”

The key advantage of employing a femtosecond laser lies in its capacity for precise customization of the allogenic ring segments and their strategic placement within the cornea of the keratoconus patient. The femtosecond laser enables the tunnels to be placed accurately in deeper parts of the cornea, and since the ring segment now is made from the same material (human cornea) , the risk of migration isis eliminated.

Femto-CAIRS for keratoconus
Femto-CAIRS for keratoconus

Creation of the CAIRS segments with the femtosecond laser

All Femto-CAIRS at ELZA

Our surgeons from the ELZA Institute were the first in Switzerland and among the first in the world to perform the All Femto-CAIRS procedure.

They have seen very positive effects on corneal shape and patient vision to date, with a noted capability of placing allogenic rings precisely into the best depth of the stroma when compared to PMMA rings, potentially offering a more effective corneal shape correction.

FAQs

Is tissue removed from my cornea during Femto-CAIRS?

No. In the contrary: the implanted corneal ring segment adds additional tissue to your cornea.

Candidates for CAIRS typically have corneal steepness between 50 and 70 diopters and a minimum stromal thickness of 300 micrometers. The expected outcome is a flattening of the cornea by five to more than ten diopters. The procedure also allows for the possibility of further corneal improvements through additional treatments, such as PACE (ELZA’s own customized cross-linking) or wavefront-guided transPRK.

Yes. Whether your cornea is progressive or stable is an issue that will be addressed with corneal cross-linking (CXL).

Femto-CAIRS has a different effect, it reshapes the cornea for better vision. Femto-CAIRS can be used in both stable or progressive keratoconus. In the latter, it will be combined with CXL.

All Femto-CAIRS represents an approach in corneal treatment that combines the use of human corneal tissue with laser technology, aimed at addressing corneal irregularities with a focus on both safety and customization to each patient’s cornea.

The beauty of All Femto-CAIRS is that it adds additional tissue to the thin keratoconus cornea. In a next step, the cornea and the patient’s vision can be further improved with other treatments, such as PACE and/or wavefront-guided PRK.

The price of Femto-CAIRS depends on several factors, including the individual staging of the patient’s disease and whether one or two ring segments are necessary.

Femto-CAIRS is a complex procedure and involves detailed planning of the placement, length, and width of the ring segment, the preparation of the ring segment from a human donor cornea provided by an eye bank, the planning, calculation, positioning and creation of the corneal tunnel in the patient’s cornea, and implantation of the ring segment under intraoperative control of an optical coherence tomographer (OCT)

The total treatment time including calculation of the profile can take up to 3 hours for the surgeon and his team. All these factors and the additional cost of a human cornea provided by an eye bank make the procedure considerably more costly than a ring implantation with a PMMA plastic ring segment.

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Augeninstitut ELZA
4.8
Based on 109 reviews
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mike
mike
09:02 04 Jan 23
Overall as a 50 year old, who wanted to continue to avoid wearing glasses and/or contact lenses, my goal was 100%... achieved with ELZA and Dr. Hafezi. I greatly appreciated the overall approach by Dr. Hafezi and his friendly and competent team in reviewing my vision at the start and following a comprehensive eye exam- the explanations of my options. For me I chose PRK in one eye for a monovision solution to correct short sightedness which was becoming more prevalent in night driving and sports such as skiing and cycling. PRK heals slowly but the outcome is worth the wait- and the cost- you use your eyes every waking moment- and for me I cannot see any reason not to pursue better vision with the ELZA team! A great quality of life enhancement!read more
Zuzana Fecko
Zuzana Fecko
21:48 31 Oct 22
Thank you so much, Dr. Torres and prof. Hafezi. 26 years I was only “dreaming” about the eye surgery due to possible... complications. I was worried ..Thank you for encouraging me to make a decision and thank you for your professionalism, explanations and great work!I wish you all the best, lots of success and only happy patients!read more
Serena Fazio
Serena Fazio
11:15 06 Mar 22
I have been to the ELZA clinic to have surgery for my miopy, as my eyes were rejecting the contacts and I was tired of... wearing glasses. From the first preliminary visit, to the actual surgery and post-surgery care Dr. Hafezi and all his collaborators have been extremely professional, considerate and helpful. All the steps of the (very short!) surgery were thoroughly explained to me in order to be as calm as possible, together with the medication plan and precautions to be aware of so that my eyes could heal in the best way possible. By following their exact instructions, the healing process has been very successful and smooth, and after about one week I was able to see perfectly. I absolutely recommend this team and their expertise!read more
Robin A
Robin A
11:43 16 Feb 22
Top experts and professional team. Highly recommended
Thunder Shiviah
Thunder Shiviah
14:05 23 Nov 21
After some research on local options I decided to go with ELZA since it stood out as the best. The operation and the... post-operation recovery went extremely smooth (something I was worried about with PRK). Now my vision is much better than I had hoped and I have no side effects such as dry eye or night vision problems. Thank you!read more
Thomas S.
Thomas S.
09:37 07 Jul 21
My left eye had to be operated on because of a cataract. As I had an Artiflex lens implanted a few years ago, it had to... be removed first before a modern lens could be implanted to correct the cataract. Prof. Hafezi treated me in an very competent and friendly manner. I am very happy with the result.read more
Selma A. Rahim
Selma A. Rahim
19:45 02 Jul 21
Dr. Hafezi.. the KING OF CXL🤴
Gianluca Ricci
Gianluca Ricci
12:46 10 Apr 21
Great team and service!
rehaneyecare
rehaneyecare
05:36 08 Apr 21
Excellent surgeon
Steven H.A
Steven H.A
16:13 11 Jan 21
Prof. F. Hafezi s expertise is enormous and he has a very pleasant and calm nature which gives the patient... security.Thank youread more
Online Commande
Online Commande
09:19 05 Dec 20
Totally creepy, very arrogant Prof.He just want your money.It may explain, why this Prof. is not in the center of the... city of Zürich and why he has been thrown away from University of Geneva.read more
Elena Churilova
Elena Churilova
10:06 17 Nov 20
At the moment, 3 months have passed since the moment I made laser vision correction in this clinic. and I can say that... I am happy that I chose this particular clinic and Prof. F. Hafezi. The entire staff of the clinic is very friendly, treats patients with sympathy and patience if they are nervous before surgery (my big gratitude to Aida Alili for all support and patience). The doctor Hafezi and other doctors of the clinic are very professional and ready to explain to you as many times as you need. I can only recommend!read more
Michele Aggiato
Michele Aggiato
18:17 10 Jan 20
The day I had Prof Hafezi checking my keratoconus I knew I was finally in the right place after years of searching for... a good ophthalmologist. Prof Hafezi recommended a surgery due to a drastic degeneration of my cornea. The surgery was performed by himself with the assistance of Dr Rodriguez, one more collaborator of Prof Hafezi’s team who got my full trust.read more
Ashley Faulkes
Ashley Faulkes
15:30 21 Mar 16
Professor Hafezi and the team at the ELZA Institute have done an amazing job of creating a first class eye clinic, with... cutting edge technology and support. I went there for a dry eye issue and other issues with my prescription, and they were easily able to help me and put me on the road to better vision! High recommend them to anyone in the Zurich/Aargau area.read more
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Augeninstitut ELZA
4.8
Based on 109 reviews
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