Keratoconus Lenses

Excellent-KK
Keratoconus RGP

Swiss-made RGP lens designed specifically for keratoconus — empirically fitted from topography and any trial RGP lens, covering a wide range of cone severity and location.

CE Marked Swiss Made Keratoconus RGP No specialist set needed
Excellent-KK Keratoconus RGP lens
Product Overview

Keratoconus Fitting. Simplified.

The Excellent-KK from Appenzeller Kontaktlinsen is a reverse-geometry RGP lens designed for keratoconus. Its unique geometry allows empirical fitting using corneal topography and any standard trial RGP lens — no specialist keratoconus diagnostic set required.

Suitable for mild to advanced keratoconus across a wide range of cone locations. CE Marked and Swiss Made — the reliable workhorse keratoconus RGP for practitioners who want consistent results.

  • Empirical fitting from topography + any trial RGP lens
  • No specialist keratoconus diagnostic set required
  • Covers central, paracentral, and inferior cones
  • High Dk fluorosilicone acrylate material — optimal oxygen transmissibility
Suitable Across All Grades
Stage 1 — Mild

Early inferior steepening. Excellent-KK provides stable vision where spectacles are beginning to fail.

Stage 2 — Moderate

Defined cone ~45–50D. Empirical fitting from topography alone — no specialist diagnostic set needed.

Stage 3 — Advanced

Pronounced apex >52D. Reverse-geometry design vaults the cone comfortably across all locations.

Stage 4 — Severe

Significant cone severity. High Dk material maintains corneal health even in the most advanced cases.

Fitted empirically from corneal topography and any standard trial RGP — no keratoconus-specific diagnostic set required.

Fitting keratoconus patients?

Contact Cosmos Enterprises to enquire about Excellent-KK or request a trial set.