Description
The HOYA Vivinex™ Toric IOL is a specialized intraocular lens designed to correct astigmatism during cataract surgery. Crafted from hydrophobic acrylic, this lens offers exceptional clarity with its glistening-free material and includes both UV and blue light filters for enhanced eye protection.
Design Features
- Optic Design: The lens features a biconvex optic with a square, thin, and textured edge. Its anterior aspheric and posterior toric designs contribute to superior visual outcomes.
- Haptic Design: The textured-rough haptic surface ensures enhanced stability within the eye, maintaining precise positioning.
Dimensions
- Optic Diameter: 6.00 mm
- Overall Length: 13.00 mm
Power Specifications
- Spherical Power Range: +10.00 to +30.00 D in 0.50 D increments
- Cylinder Power at IOL Plane: 1.00 to 6.00 D (T2 to T9)
- Cylinder Power at Corneal Plane: 0.69 D to 4.17 D
A-Constant
The nominal A-constant is 118.9, with optimized constants available for various formulas including Haigis, Hoffer Q, Holladay 1, and SRK/T.
Injector System
The lens is compatible with the preloaded multiSert™ or Vivinex™ iSert® injector systems, featuring a front injector tip outer diameter of 1.70 mm and a recommended incision size of 2.20 mm.
Clinical Benefits
Rotational Stability
- Over 96% of lenses exhibit rotation of ≤5° post-implantation, ensuring consistent visual performance.
- Median rotation is 1.1°, with 100% of lenses maintaining ≤5° rotation up to six months post-surgery.
Optical Performance
The proprietary aspheric optic design partially compensates for corneal spherical aberration, enhancing image quality and increasing tolerance to coma.
Material Advantages
- Clarity: Glistening-free material with active oxygen processing for a smooth surface.
- Edge Design: The square optic edge reduces posterior capsule opacification (PCO).
Calculation Tools
The HOYA Toric Calculator, incorporating the Abulafia–Koch Regression formula, is available for precise cylinder power calculation.
Indication
This lens is indicated for the correction of pre-existing corneal astigmatism during cataract surgery, providing patients with improved visual outcomes and quality of life.
