Description

The HOYA TORIC IOL, specifically the Vivinex™ Toric models XY1A, XY1A-SP, and NS60YT, is a sophisticated intraocular lens designed for patients undergoing cataract surgery who require astigmatism correction. This lens offers advanced features tailored to enhance visual outcomes and provide long-term stability.

Optic Design

• Biconvex Structure: The lens features a biconvex optic with a sharp, square edge to minimize posterior capsule opacification (PCO).
• Aspheric and Toric Surfaces: The anterior surface is aspheric, while the posterior surface is toric, aiding in precise alignment through axis orientation marks.

Material and Filters

Crafted from glistening-free hydrophobic acrylic, the lens integrates UV and blue light filters, ensuring clarity and protection. This material choice enhances the lens's biocompatibility and long-term performance.

Haptic Design

The lens includes a textured-rough haptic surface made from the same acrylic material, promoting enhanced stability and rotational control. The NS60YT model features an anchor wing-haptic design for secure fixation within the capsular bag.

Dimensions and Power Range

• Optic Diameter: 6.00 mm
• Overall Length: 13.00 mm
• Spherical Power: Ranges from +10.00 to +30.00 diopters in 0.50 D increments.
• Cylinder Power: At the IOL plane, it ranges from 1.00 to 6.00 D, providing comprehensive astigmatic correction.

Optical Constants

The lens includes specific optical constants for precise calculation using various formulas, enhancing the customization of visual outcomes for each patient.

Injector System

The preloaded Vivinex™ iSert® or multiSert™ injector system facilitates a smooth implantation process. With a recommended incision size of 2.20 mm, it supports both single- and two-handed injection techniques.

Clinical Performance

Rotational Stability

The lens demonstrates exceptional rotational stability, with a median rotation of 1.1° and no cases requiring repositioning surgery. This stability is maintained across various eye conditions, ensuring consistent visual correction.

Optical Performance

The proprietary aspheric optic design compensates for corneal spherical aberration, reducing PCO through innovative surface treatments. Clinical studies indicate lower PCO rates and reduced need for Nd:YAG capsulotomy compared to other IOLs.

Safety and Biocompatibility

The lens material remains glistening-free, maintaining clarity over time. It exhibits mild PCO in a small percentage of cases, with no reported dislocation or need for repositioning.

Indications for Use

Intended for healthcare professionals, the HOYA TORIC IOL is suitable for a wide range of astigmatic corrections, aligning with diverse patient anatomies. Proper alignment and viscoelastic removal are recommended to optimize rotational stability.

Additional Tools

The HOYA Toric Calculator, including the Abulafia-Koch Regression formula, supports accurate estimation of posterior corneal astigmatism, enhancing the precision of surgical outcomes.