Astigmatism Buster - A Novel Implant Which Really Works To Regularize The Corneal Astigmatism

The management of keratoconus and post-LASIK ectasia can be challenging. Often these patients have poor
unaided and aided vision due to irregular corneal astigmatism; they are often spectacle & contact lens intolerance. We describe a new surgical technique using a
XENIA™ Lenticule - a novel biocompatible corneal lenticule of highly purified corneal collagen fibres of porcine origin

All the patients were treated at Optimax Eye Clinics in England, United Kingdom. A single surgeon (1st author)
treated all the patients. Patients were recruited following referral from other Eye Centres; all patients were
counselled, explained all other options and informed consenting form completed

A total of 20 eyes of 19 patients have undergone the procedure.. Of these 20 patients, the last 2 patients received the newer, 4th Generation Xenia Implants and their results would be discussed in this presentation. A custom corneal stromal pocket of 200μm depth and 8/8.7mm diameter was created with a 3.7 mm
access port using an Intralase femtosecond laser. A 45μm thick,  Gebauer™ lenticule was implanted into this stromal pocket though
the 3.7 mm port. No sutures were used. Pre and post operative topography, pachymetry, intraocular pressures were
recorded as well as aided, unaided and corrected vision

Following implantation of the lenticule, average corneal thickness was increased from 420μm to 480μm.
Anterior corneal astigmatism decreased from
5.2 D to 0.25 D. Unaided vision improved from 6/24 to 6/6 within 48 hours

The Newer Generation XENIA Implant - results are very promising in stabilising keratoconic eyes. 
Xenai Implants remained transparent.during the postoperative period
Deeper the femtosecond pocket, better the flattening of the postoperative keratometry values and the visual outcome

One of the patient achieved 6/6 unaided vision within 48 hours

This technique could be used to treat non-keratoconic eyes too