FERRARA RING Instrastromal Corneal Implant


The FERRARA RING™ consists of a semi-circular 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 a 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



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