Description

The HOYA iSert PY-60AD is a highly specialized intraocular lens (IOL) designed for patients undergoing cataract surgery. This monofocal, aspheric lens is intended to replace the natural lens of the eye, providing clear vision post-surgery. Its advanced design is tailored for placement in the capsular bag, offering significant benefits in visual outcomes.

Optic Design

• Aspheric, Aberration-Correcting Optic: The lens features an aspheric, aberration-correcting optic that enhances visual clarity by minimizing optical aberrations.
• Biconvex Shape: Its biconvex shape contributes to its refractive optical principle, ensuring precise focus.
• 360-Degree Square Edge: The 360-degree square edge design helps reduce posterior capsule opacification (PCO), a common post-surgical complication.
• Color Options: Available in both clear and yellow versions, the yellow variant offers additional blue light control and UV protection.

Material Composition

The lens is crafted from hydrophobic acrylic, known for its glistening-free properties, ensuring long-term clarity. The proprietary aspheric optic has a compensating spherical aberration of -0.18μ. The haptics are made from blue PMMA, chemically bonded to the optic, providing stability within the eye. The overall composition includes 97% soft acrylic and 3% PMMA.

Dimensions and Configuration

• Optic Diameter: 6.0 mm
• Overall Length: 12.5 mm
• Haptic Angulation: 5° with a modified C-loop configuration
• Incision Size: Less than 2.75 mm, facilitating minimally invasive surgery

Preloaded Delivery System

The HOYA iSert PY-60AD comes with a fully preloaded iSert injector system, streamlining the surgical process by reducing the need for cleaning and sterilization of reusable injectors. This system is designed to ease the workload on medical staff, providing clear preparation steps for effective handling.

Manufacturing and Optical Constants

The lens is lathe-cut and tumble-polished, ensuring high precision and quality. Its optical constants include an estimated A-constant of 118.4 and optimized Haigis constants (a0 = -0.093, a1 = -0.023, a2 = 0.208), crucial for accurate lens power calculations.

Longevity and Considerations

With an expected lifetime of 20 years, the lens typically does not require replacement unless medically necessary. While there are no known contraindications for adults, certain medical conditions may need special consideration by the surgeon. Potential adverse events include common surgical risks such as wound leak, dry eye syndrome, and changes in intraocular pressure.

Global Impact

Since its launch in 2007, over 10 million of these lenses have been implanted worldwide, underscoring its reliability and effectiveness in improving visual outcomes for cataract patients. The HOYA iSert PY-60AD does not provide astigmatism correction, making it ideal for patients without this condition.