The Vedera™ KXS and the Keraflex® Procedure

During a Keraflex® procedure, the Vedera™ KXS delivers a single low energy microwave pulse lasting less than one second. Energy is applied to the cornea using a dielectrically shielded microwave emitter which contacts the epithelial surface. Through capacitive coupling, the single pulse raises the temperature of the selected region of corneal stroma to approximately 65°C, shrinking the collagen and forming a toroidal lesion in the upper 150 microns of the stroma.

Using an evaporative cooling technique (patent pending), the Vedera KXS cools the surface of the cornea during the treatment to isolate and protect Bowman’s membrane from the thermal effects of the microwave energy. The lesion created during Keraflex is intended to flatten the central cornea to achieve myopic correction without compromising the biomechanical integrity of the cornea.

The amount of induced refractive change achievable with the Vedera KXS is a function of lesion diameter and cross-section. Avedro has developed Keraflex Applicators with varying diameter emitters to provide the capability to create a range of lesion diameters when performing the Keraflex procedure. Depending on the amount of energy delivered by the Vedera KXS and the choice of Keraflex Applicator, tissue lesions of differing dimensions and geometries can be created.

Avedro uses a proprietary sterile, disposable, BioInsulator™ for the dielectrically controlled transmission of the microwave energy; safe and efficient cooling of the eye; and protection against cross-contamination during each Keraflex procedure.

The Vedera KXS, for performing the Keraflex procedure, is a CE marked product. The Vedera KXS is not currently available in the United States.