Description
The HOYA TORIC IOL XY1AT4, part of the Vivinex™ Toric range, is a specialized intraocular lens designed to enhance visual outcomes for cataract surgery patients with astigmatism. Crafted from glistening-free hydrophobic acrylic, this lens integrates both UV and blue light filters, ensuring long-term clarity and protection.
Advanced Optic Design
- Aspheric Optic: Features an anterior aspheric surface to partially compensate for corneal spherical aberration, enhancing image quality.
- Toric Surface: The posterior toric surface is tailored for precise astigmatism correction.
- Square Edge: A sharp, square optic edge design minimizes posterior capsule opacification (PCO), maintaining lens clarity.
Dimensions and Power
- Optic Diameter: 6.00 mm
- Overall Length: 13.00 mm
- Spherical Power Range: +10.00 to +30.00 diopters in 0.50 D increments
- Cylinder Power: For the XY1AT4 model, a cylinder power of 2.25 D at the IOL plane (1.56 D at the corneal plane)
Haptic Design
The lens features a textured-rough haptic surface made from the same acrylic material, promoting enhanced rotational stability. Clinical studies show over 96% of these lenses rotate ≤5°, with a median rotation of 1.1° up to six months post-surgery.
Injector System
Preloaded in the Vivinex™ iSert® or multiSert™ injector system, the lens allows for a recommended incision size of 2.20 mm, facilitating seamless implantation.
Optical Performance
The proprietary aspheric optic design improves image quality and tolerance to coma. Active oxygen processing creates a smooth, regular IOL surface, while the square edge design significantly reduces PCO. Clinical results demonstrate lower PCO and Nd:YAG capsulotomy rates compared to other IOLs.
Clinical Benefits
The HOYA TORIC IOL XY1AT4 offers:
- Long-term biocompatibility
- Consistent image quality
- Low incidence of PCO
These features make it a reliable choice for healthcare professionals aiming for precise visual correction in cataract surgery patients.
Support Tools
The lens's performance is further supported by the HOYA Toric Calculator, including the Abulafia-Koch Regression formula, for accurate cylinder power calculation. Availability may vary by country, aligning with local clinical needs.
