Description
The HOYA Vivinex™ Toric IOL, Model XY1AT3, is a specialized intraocular lens designed for patients undergoing cataract surgery with the need for astigmatism correction. Crafted from glistening-free hydrophobic acrylic, this lens incorporates both UV and blue light filters, ensuring enhanced visual clarity and protection.
Optic Design
- Biconvex Structure: Features a square, thin, and textured edge for optimal performance.
- Aspheric Design: The anterior aspheric and posterior toric design helps in partially compensating for corneal spherical aberration.
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: Ranges from 1.00 to 6.00 D at the IOL plane, with specific increments tailored for precise correction.
Haptic Design
The textured-rough haptic surface enhances the lens's stability within the eye, contributing to its clinically proven rotational stability. Over 96% of these lenses exhibit a rotation of ≤5°, maintaining consistent alignment post-surgery.
Injector System
The lens is compatible with the preloaded multiSert™ injector system, recommended for a 2.20 mm incision size. This system includes axis orientation marks on the posterior surface, aiding in precise alignment during implantation.
Clinical Performance
- Rotational Stability: Median rotation is approximately 1.1° at various postoperative intervals.
- Surface Design: The smooth, regular surface and square edge design significantly reduce posterior capsule opacification (PCO), leading to lower Nd:YAG capsulotomy rates compared to other lenses.
Calculation Tools
The HOYA Toric Calculator, including the Abulafia-Koch Regression formula, is utilized for accurate estimation of posterior corneal astigmatism, enhancing surgical outcomes.
Intended Use
This lens is intended for use by healthcare professionals and may not be available in all countries. Its advanced features and proven clinical performance make it a reliable choice for achieving optimal visual outcomes in cataract surgery patients with astigmatism.
