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Nissel K2 Rigid is a complete system of rigid gas-permeable lenses designed to manage all stages of keratoconus. The lenses can be fitted to all keratoconic patients, whether early or advanced. Lens design options include toric peripheries, full bitorics and quadrant-specific geometry for asymmetric corneas. All lenses are delivered with aberration-control optics to provide best possible visual acuity at different lighting levels. All of the Nissel K2 lenses are manufactured and supplied by Cantor + Nissel in the UK using Optoform lathes (Figure 1).
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