Specifications
- Packing: 1/pk
- Material: Hexafocon A (HA)
- Dk/t @ -3.00D: 100
- Power Range: +40.00 to -40.00
- Base Curve (mm): 5.2 to 11.6
- Diameter (mm): 9.0 to 12.5
- Edge Lift: Std (0.0), Std flat (+1.0), Std steep(-1.0)
Double flat (+2.0), Double steep (-2.0)
-3.0 decreased (steep) to +4.0 increased (flat) (0.5 step)
Mô tả
Visual Recovery: Rose K2™ Post-Graft / IC for Complex Corneal Profiles
Product Introduction The Rose K2™ Post-Graft / IC is a highly specialized Rigid Gas Permeable (RGP) lens designed for patients who have undergone corneal transplantation (Post-Graft) or exhibit extreme corneal irregularity due to surgery, trauma, or medical conditions (IC - Irregular Cornea). Post-surgical corneas often feature significant steps, elevation changes, or high astigmatism at the graft-host junction. This lens utilizes a unique geometry to vault over these irregularities and re-establish a perfect spherical optical interface.
Core Technology & Benefits
-
Multi-Curve Posterior Geometry: Post-graft corneas are unpredictable—they can be prolate (steep) or oblate (flat). The Post-Graft design allows for independent curvature adjustments in the central and peripheral zones, enabling the lens to "bridge" over suture lines without putting mechanical pressure on the delicate graft tissue.
-
Aberration Control Optics: Surgical corneas are frequently plagued by severe glare and higher-order aberrations. The optical zone of this lens is precision-calculated to filter scattered light, significantly improving visual contrast and clarity in complex lighting environments.
-
Adjustable Edge Lift: To accommodate peripheral edema or sudden contour changes common after surgery, practitioners can precisely adjust the edge lift. This ensures healthy tear exchange and minimizes mechanical irritation to sensitive surgical sites.
-
Advanced Gas Permeable Materials: Because grafted corneas may have compromised endothelial function, these lenses are made from high-Dk materials. This ensures maximum oxygen delivery, which is vital for maintaining graft clarity and preventing graft rejection.
Common Questions
1. How soon after a corneal transplant can I be fitted for this lens?
Fitting typically occurs after sutures are removed or once the graft is stable and the surgical site has fully healed. This timeline must be determined by your corneal specialist, usually ranging from 6 months to a year post-operation.
2. Why can't spectacles fix my vision after a transplant?
Post-graft corneas often possess high levels of irregular astigmatism. Glasses can only correct regular refractive errors and cannot eliminate the distortions caused by an uneven corneal surface. Rose K2™ "fills in" these irregularities with a tear lens, providing clarity that spectacles cannot achieve.
3. Will wearing this lens affect the lifespan of my graft?
With a precise fit and proper hygiene, the lens will not harm the graft. In fact, the high-Dk design is specifically intended to protect the graft's long-term physiological health. Restoring functional vision often significantly improves the patient's quality of life.
4. Can I use this lens if I have corneal inserts like Intacs?
Yes, it is highly suitable. The IC (Irregular Cornea) design is specifically engineered for such cases. It can vault over the local elevations caused by the inserts, ensuring stable centration and correcting residual astigmatism that the inserts may not have fully addressed.
Xem thêm chi tiết về Intan Optometry Clinic
