Specifications
- Packing: 1/pk
- Material: Hexafocon A (HA)
- Dk/t @ -3.00D: 100
- Power Range: +25.00 to -45.00
- Base Curve (mm): 4.0 to 8.10
- Diameter (mm): 7.6 to 10.0
- Edge Lift: Std (0.0), Std flat (+1.0), Std steep(-0.5)
Double flat (+2.0), Double steep (-1.0)
-1.5 decreased (steep) to +4.0 increased (flat) (0.1step)
Description
Targeted Correction: Rose K2™ Nipple Cone for Small-Diameter Cones
Product Introduction The Rose K2™ Nipple Cone is a highly specialized Rigid Gas Permeable (RGP) lens designed specifically for "Nipple Cone" keratoconus. In these cases, the corneal cone is typically small in diameter (less than 5mm) and located near the center of the cornea. Because these cones are steep and localized, standard lenses often apply excessive pressure to the apex. The Nipple Cone model features a smaller geometric profile that precisely encapsulates these small, steep cones, providing unparalleled stability and visual clarity.
Core Technology & Benefits
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Refined Small-Diameter Geometry: Specifically designed for the anatomy of a nipple cone, this lens utilizes a smaller optical zone. This allow the lens to seat naturally on the narrow base of the cone, preventing issues like excessive edge lift or centration failure often seen with larger lenses.
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Steep Base Curve Management: This model supports extremely steep base curve customizations to accommodate the high elevation of a nipple cone. This ensures an ideal tear gap over the apex, protecting the cornea from mechanical abrasion.
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Advanced Aberration Control: To address the severe glare and halos caused by small-diameter cones, the optical zone is precision-engineered to focus light accurately onto the retina, significantly enhancing contrast and eliminating ghosting.
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Flexible Edge Lift Adjustment: Practitioners can precisely tune the peripheral curves based on the flatness of the surrounding cornea. This ensures healthy tear exchange while greatly improving the comfort of wearing such a specialized geometric lens.
QNA
1. What is a "Nipple Cone," and why isn't the standard Rose K2 enough?
A nipple cone is characterized by a small, localized, and very steep protrusion. The standard Rose K2 is designed for broader cone shapes. Because a nipple cone is so steep, a standard diameter lens may sit unstable or have excessively loose edges. The Nipple Cone model provides a "custom-fit" feel for these specific, localized protrusions.
2. Does wearing such a steep lens affect corneal health?
When fitted correctly, the lens is protective. The Nipple Cone design is intended to safeguard the apex of the cone via a tear layer, avoiding physical contact. Combined with high-Dk materials, it maintains healthy corneal metabolism.
3. What does the lens feel like on the eye?
Since the diameter is typically smaller than standard RGPs, the eyelids may feel the lens moving initially. However, because it fits the cone more snugly and reduces unnecessary wobbling, most patients find it very stable after a 1-week adaptation period.
4. Can I use the Nipple Cone lens if my cone is decentralized (off-center)?
If the cone is extremely decentralized (such as a low-riding pellucid-like cone), a practitioner might consider other Rose K2 models (like the XL). The Nipple Cone model is most effective for cones that are relatively centered.
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