Description

The HOYA Vivinex™ Toric Intraocular Lens (IOL) is a specialized lens designed for implantation during cataract surgery, aimed at correcting pre-existing corneal astigmatism. Crafted from glistening-free hydrophobic acrylic, this lens offers exceptional optical clarity and includes a UV and blue light filter for enhanced eye protection.

Optic and Haptic Design

• Aspheric and Toric Surfaces: The lens features an anterior aspheric surface and a posterior toric surface, contributing to its precise visual correction capabilities.
• Biconvex Shape: The biconvex shape, along with a square, thin, and textured optic edge, enhances its performance.
• Haptic Stability: The C-loop configuration and textured-rough haptic surface provide superior stability within the eye.

Surface Treatment

The lens undergoes active oxygen processing, resulting in a smooth surface and square edge. This design significantly reduces posterior capsule opacification (PCO), maintaining long-term visual clarity.

Dimensions and Power Range

• Optic Diameter: 6.00 mm
• Overall Length: 13.00 mm
• Spherical Power Range: +10.00 to +30.00 D in 0.50 D increments
• Cylinder Power Range: 1.00 to 6.00 D (IOL plane) with specific increments for precise correction

Optical Constants

The lens includes optimized constants for various calculation formulas, ensuring accurate power prediction and alignment.

Injector System

The preloaded multiSert™ or iSert® injector system allows for a recommended incision size of 2.20 mm. It offers flexible injection methods, including single-handed push or two-handed screw techniques, with an adjustable insert shield for precise insertion.

Clinical Performance

Rotational Stability

• Median Rotation: 1.1°
• Post-Implantation Stability: Over 96% of lenses rotate ≤5°
• Long-Term Stability: 100% of lenses maintain <5° rotation up to 6 months post-surgery

Clarity and PCO Prevention

The lens material remains glistening-free, providing outstanding optical clarity. Its design effectively minimizes PCO, with clinical studies showing lower PCO scores and Nd:YAG capsulotomy rates compared to other IOLs.

Intended Use

The HOYA Vivinex™ Toric IOL is intended for healthcare professionals to correct astigmatism in patients undergoing cataract surgery. It is CE marked, indicating compliance with European health, safety, and environmental protection standards.