Specifications
- Dk/t @ -3.00D: 45
- Power Range: Sph: Any; cyl: -0.25 to -10.00 (0.12 step); Axis :0° to 180° (1° step); Prism ballast: 0.75 to 2.0 (0.05 step); Standard prism: 1.2
- Base Curve (mm): 6.6mm to 9.4mm (0.2 steps)
- Diameter (mm): Std: 14.8
14.2 to 15.4 (0.1 steps)
- Center Thickness @ -3.00D: Std: 0.35
0.25 to 0.60 (0.01step)
- Water Content: 74%
- Edge Lift: Standard (0), Standard Increased (+1.0), Double Increased (+2.0),
Standard Decreased (-1.0) and Double Decreased (-2.0)
- Packing: 1/pk
- Material: Definitive 74 (Silicone Hydrogel) for 3 monthly replacement, blue handling tint
Menicon Soft 72 (Hydrogel) for 6 monthly replacement, aqua handling tint
Mô tả
Gentle Correction: Experience Comfort with Rose K2™ SOFT
The Rose K2™ SOFT is a daily-wear soft contact lens specifically engineered for keratoconus and irregular corneas. Utilizing a unique silicone hydrogel material and advanced lens geometry, it is designed for patients who are highly sensitive to Rigid Gas Permeable (RGP) lenses or have failed RGP fittings. It combines the superior comfort of a soft lens with the proven visual correction logic of the Rose K2 design, making it the ideal alternative for comfort-driven patients.
Core Technology & Benefits
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Increased Center Thickness: Unlike standard soft lenses, the Rose K2™ SOFT features an enhanced central thickness to effectively mask corneal irregularities. This provides a stable optical surface similar to a rigid lens, reducing image distortion.
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Complex Posterior Geometry: The back surface utilizes a design philosophy similar to the Rose K2 RGP, allowing it to fit the characteristic shape of a keratoconic cornea. This precise alignment ensures stable centration, preventing the visual fluctuations common with standard soft lenses.
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High-Dk Silicone Hydrogel: Manufactured from advanced silicone hydrogel, the lens offers exceptional oxygen permeability. This ensures that even with the increased center thickness, the cornea receives ample oxygen to maintain health and metabolism.
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Adjustable Peripheral System: Practitioners can adjust the peripheral tension based on the flatness of the patient's surrounding cornea. This flexibility ensures the lens maintains stable vision without feeling too tight or too loose on the eye.
Common Questions
1. Can the visual clarity of Rose K2™ SOFT match an RGP?
For most mild to moderate keratoconus patients, Rose K2™ SOFT provides visual clarity very close to that of an RGP. While RGPs may still hold an edge in optical sharpness for extremely irregular cases, the SOFT version offers an excellent balance of comfort and vision.
2. Why is this lens better for keratoconus than standard soft contacts?
Standard soft lenses drape over the cornea, failing to correct irregular astigmatism. Rose K2™ SOFT has more structural integrity, using its thickness and specialized design to "smooth over" the cone, resulting in much clearer vision.
3. Does this lens require a special fitting process?
Yes. Although it is a soft lens, the fitting logic is far more complex than standard lenses. It requires a professional eye care practitioner using a specialized trial set and corneal topography for a precise fit.
4. Does the lens feel thick on the eye?
Because of the increased center thickness, you may feel the lens more than an ultra-thin standard soft lens initially. However, the edges are precision-tapered, and the overall comfort remains significantly higher than any rigid lens (RGP).
5. What is the replacement schedule for this lens?
Rose K2™ SOFT is typically designed as a frequent replacement lens (such as quarterly or half-yearly), depending on the specific material and your practitioner's advice. Diligent daily cleaning and protein removal are essential to maintain optical performance.
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