The FERRARA RING™ consists of a semicircular segment with an arc of variable length and a fixed triangular section: AFR (0.60 mm base) and AFR6 (0,80 mm base).

Single Use Implant. Each segment has hole of 0.20 mm at each end to facilitate its implantation

The correct indication of Ferrara Ring implants requires a detailed evaluation of the topographic conditions and pachymetry of the cornea, in addition to a complete visual examination

• Intolerance to contact lenses
• Progressive keratoconus
• Corneal deformity induced by contact lenses (Harstein’s syndrome)
• Post-penetrating keratoplasty astigmatism
• Post-Lasik corneal ectasias
• Post-radial keratotomy astigmatism
• Pellucid marginal degeneration

Material : Polymethyl Methacrylate (PMMA) with natural filter for blue light