Description

The 20D Large Lens, prominently associated with the Volk brand, stands as a gold standard in ophthalmic tools for indirect binocular ophthalmoscopy. Renowned for its precision, this lens is essential for comprehensive retinal examinations, offering ophthalmologists a clear view up to the mid-peripheral retina.

Key Features

• Optical Excellence: The lens features a double aspheric, biconvex design, correcting for field curvature, astigmatism, and other aberrations, ensuring unparalleled clarity.
• Dioptric Power: With a power of +20 diopters, it provides approximately 3.13x image magnification, making it ideal for detailed retinal assessments.
• Field of View: Offers a typical field of view ranging from 46° to 60°, allowing for broad visualization of the retina.
• Working Distance: A comfortable working distance of around 50 mm enhances usability.

Material and Design

Crafted from high-quality optical glass, the lens includes an anti-reflective coating to minimize glare. Available in various colors, it offers customization options such as custom engraving and ring colors.

Maintenance and Care

The lens supports various cleaning methods, including alcohol wipes and specific disinfectant solutions. Some models offer autoclave sterilization, aligning with rigorous hygiene standards.

Accessories

Each lens comes with a complimentary case, providing secure storage and longevity. Customization options enhance personalization, making it a versatile tool tailored to professional needs.

Certifications

The lens meets several industry standards with certifications like CE, FDA, and ISO13485, though these may vary by manufacturer.

Intended Use

Primarily used for general retinal examination, the 20D Large Lens aids in visualizing the optic disc, macula, and estimating optic disc size. It is compatible with fundus cameras and indirect ophthalmoscopes, though not typically used with slit lamps.

This lens remains a trusted choice for eye care professionals, combining advanced optical technology with practical design to support accurate and effective eye examinations.