Exploring (EDOF)Extended Depth-of-Focus Contact Lenses

Exploring the Benefits and Limitations of (EDOF) Extended Depth-of-Focus Contact Lenses

In the ever-evolving landscape of vision correction, Extended Depth-of-Focus (EDOF) contact lenses have emerged as a promising addition to the array of presbyopic-correcting options. While the category may have fewer choices compared to traditional designs, the impact of EDOF lenses is making waves in the world of optometry.

This article delves into the mechanics, advantages, and limitations of EDOF contact lenses, shedding light on their potential role in enhancing the visual experience for wearers.

what are Extended Depth-of-Focus Lenses?

Extended Depth-of-Focus lenses differentiate themselves by incorporating various focal length-correcting areas within the lens, extending the wearer’s visual range. Unlike traditional multifocal lenses, EDOF lenses aim to address intermediate and near tasks while maintaining a high-quality distance view. This innovative approach provides wearers with a seamless transition between different focal points, offering a more natural and comprehensive visual experience.

Also read-Air Optix Multifocal fitting guide

Acuvue multifocal fitting calculator

Advantages of EDOF Contact Lenses

1. Enhanced Viewing Range: The primary benefit of EDOF contact lenses lies in their ability to improve the wearer’s viewing range. By incorporating multiple focal length corrections, these lenses excel at intermediate and near tasks, making them suitable for individuals with presbyopia.
2. Pupil Size and Location: Reports indicate that EDOF lenses demonstrate fewer issues related to pupil size and location. This advantage contributes to increased comfort and adaptability for wearers, as the lenses are designed to accommodate a wider range of pupil variations.
3. Reduced Optical Aberrations: EDOF lenses have shown promise in reducing susceptibility to inherent optical aberrations. This improvement enhances visual clarity and minimizes distortions, providing wearers with a more consistent and high-quality visual experience.

Challenges and Limitations of EDOF Contact Lenses

1. Evolving Technology: As EDOF lenses are relatively new to the market, ongoing research and development are crucial for refining their designs and addressing limitations. Optometrists and wearers alike can anticipate advancements in lens technology that prioritize fluidity and customization for near-vision tasks.
2. Limited Design Choices: Compared to other presbyopic-correcting options, EDOF lenses currently offer fewer design choices. As the technology matures, it is likely that more diverse designs will emerge, catering to a broader range of visual needs and preferences.
3. Individual Variability: The effectiveness of EDOF lenses may vary among individuals, and optometrists must consider factors such as lifestyle, occupation, and visual demands when recommending these lenses. A personalized approach to fitting is essential to optimize the benefits of EDOF contact lenses for each wearer.

Options for EDOF CL presbyopia correction:

1. NaturalVue Multifocal
2. SynergEyes iD EDOF

SynergEyes iD EDOF

SynergEyes ID EDOF is a revolutionary multifocal extended depth of focus (EDOF) contact lens designed to provide exceptional visual clarity at near, intermediate, and distance distances.

SynergEyes ID Multifocal EDOF is a personalized lens made specifically for each patient, providing a unique combination of features for premium performance. The lens is designed to offer the following benefits:

1. Exceptional Clarity: The lens combines the exceptional clarity of a GP lens with a unique power profile that elongates the patient’s depth of focus. This allows for clearer vision at near, intermediate, and distance distances.
2. SiHy Soft Skirt: The lens incorporates a SiHy soft skirt that follows the linear shape of the sclera, providing comfort and stability.
3. Empirically Designed: The lens is empirically designed, offering a streamlined fit and high rate of first-lens dispense, patient preference, satisfaction, and revenue retention.
4. Optic Design: The lens features a proprietary Extended Depth of Focus (EDOF) design from the Brien Holden Vision Institute, enabling centration with balanced edge tension and reduced grip for improved all-day comfort.
5. Central GP Material: The central GP material provides high-quality optics and creates a tear layer that neutralizes corneal astigmatism for stable vision correction.
6. Individually Designed: The lens is designed based on a patient’s unique corneal diameter, curvature, and HVID, ensuring a personalized fit and offering a level of precision never before delivered in a hybrid lens.
7. Testimonials: The lens has received positive feedback from practitioners, with patients reporting improved vision without compromising on clarity.

Technical Specifications:

• Diameter: 14.5mm
• Skirt: 38 to 49 in increments of 1 step to accommodate HVID range of 10.0 to 13.0mm
• Base Curves: 7.10mm to 8.30mm in increments of 0.01mm
• Multifocal Lens Powers: +5.50 to -10.00D, +5.50 to -8.00D in 0.25D steps, -8.50 to -10.00D in 0.50D steps
• Add Power: Low, Medium, High
• UV Blocker: UVA and UVB
• Recommended Wear & Replacement: Daily wear; recommended replacement every 6 months

Overall, SynergEyes ID Multifocal EDOF is a breakthrough, empirically-fit multifocal lens that offers personalized, stable, and clear vision for presbyopic patients. It brings together the benefits of GP and SiHy materials, resulting in a comfortable, premium performance contact lens.

SynergEyes iD Multifocal EDOF Lens Parameters

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