+91-9240214610 (Bandra)
+91-9240214611 (Kandivali)
July 20, 2026 | Author: Admin
Corneal Allogenic Intrastromal Ring Segments is abbreviated as CAIRS. It is a minimally invasive eye surgery for keratoconus, pellucid marginal degeneration, and post-LASIK ectasia where small, arc-shaped pieces of human donor corneal tissue are inserted into channels in the middle layer of the patient’s cornea to flatten and reshape the bulge.
CAIRS is used to treat keratoconus, correct irregular astigmatism, and flatten the cone-shaped bulge in a thinning cornea. It brings back clear vision and is safer than using artificial rings or full transplants.
Patients who have any of the following conditions are good candidates for the CAIRS procedure:
CAIRS is not a traditional full or partial corneal replacement transplant. Instead, it is a minimally invasive reshaping procedure that places small pieces of human donor corneal tissue into tiny tunnels in your own eye’s cornea to fix problems like keratoconus.
The CAIRS technique involves implanting thin arcs of processed donor corneal tissue into small tunnels made within the weakened cornea of the patient to flatten the cone, regularize its shape, and improve vision. We present them below:
CAIRS improves vision by flattening and regularizing the shape of an irregular cone-shaped cornea. This is done by inserting thin strips of donor corneal stroma into precise pockets in the eye and adding tissue.
The full perks of CAIRS transplant include:
Yes, CAIRS can be combined with other therapies, especially Corneal Cross-Linking (CXL) and future vision correction procedures such as ICL or laser procedures. Corneal Cross-Linking (CXL) is often used with CAIRS and stops the progression of keratoconus. CXL strengthens the weak cornea, and CAIRS helps the cornea to take shape to make vision sharp.
Recovery from CAIRS surgery is generally rapid and minimally invasive, with most patients returning to normal daily activities within 2 to 5 days. Mild discomfort, blurry vision, and a scratchy feeling typically resolve within a week, with full visual stabilization taking about 1 to 3 months. The cornea then remodels around the ring segments, causing vision to gradually clear and stabilize.
CAIRS surgery carries a low risk profile compared to traditional transplants. Very rare but possible post-operative complications include:
CAIRS visual and structural results are designed to provide long-term stability, with clinical data showing parameters remain stable and maintained over multi-year follow-up periods. The longterm results are largely because they use human donor tissue, which is naturally incorporated into the cornea and so avoids the long term rejection, erosion, and thinning problems of older plastic implants.
Technically, keratoconus does not “grow back” after CAIRS, because the procedure is a reshaping method, not a cure. But without proper stabilization of the cornea, the condition underneath can still progress or continue to change, and that is when slight vision changes start to develop.
CAIRS surgery is generally not painful during the procedure, as it is performed using local or topical anesthetic eye drops. Most patients may feel mild pressure.
Yes, most people still need glasses or contact lenses after CAIRS, though vision and lens tolerance usually improve. The main goal of CAIRS is to reshape and regularize a cone-steeped or irregular cornea such as in keratoconus, so that light focuses better.
Yes, both eyes can be treated with CAIRS if both eyes are showing signs of keratoconus or corneal ectasia. But doctors don’t usually treat the eyes at the same time, on the same day.
CAIRS is a new tissue-based treatment for selected keratoconus patients. It can improve corneal shape and vision while keeping the patient’s own cornea. A corneal specialist with experience can help determine if CAIRS is the right treatment option for you with early diagnosis and evaluation.
