Description

The Volk 78D Lens by Volk Optical is an essential tool for ophthalmic professionals, designed for both diagnostic and laser applications. This non-contact, double aspheric lens is crafted for use with a slit lamp, providing exceptional clarity and a comprehensive view of the retina and optic nerve head. Its design facilitates detailed examination, making it ideal for general fundus and macula assessments, as well as laser therapy procedures.

Key Features

• Magnification and Field of View: The lens offers 0.93x image magnification and 1.08x laser spot magnification, with a field of view ranging from 81° to 97°. This balance between magnification and field of view is particularly beneficial for diagnosing conditions such as glaucoma and diabetic retinopathy.
• Design Specifications: With a working distance of 8 mm and a lens diameter of 31 mm, the Volk 78D Lens provides a practical and efficient examination experience. Its BBAR anti-reflective coating enhances performance during diagnostic imaging and laser procedures across visible and near-infrared wavelengths.

Versatility and Customization

Available in a variety of color variants, the lens also offers optional engraving, allowing for personalization. It includes a single-lens case and is compatible with all slit lamps, providing flexibility in clinical settings. The lens can be effectively used with either surface facing the patient, and while pupil dilation is recommended, it can still be utilized undilated for optic nerve views.

Maintenance and Care

Proper cleaning and disinfection are crucial for maintaining the lens's performance. Recommended cleaning involves using lukewarm or distilled water with pH-neutral soap, followed by drying with a lint-free cotton cloth. High-level disinfectants such as Bode Mikrobac Tissues and CaviWipes are advised for disinfection, adhering to manufacturer instructions.

For sterilization, methods such as Ethylene Oxide, Steam, and systems like Sterrad® are suitable, while avoiding sterilization of leatherette or clamshell cases. Storage should be in a clean, dry environment at room temperature. Practitioners should note that repeated sterilization may cause cosmetic fading of colored rings without affecting functionality.

Clinical Application

The Volk 78D Lens is part of Volk’s Classic Series, renowned for its reliability in comprehensive retinal examination. It provides a real, inverted image of the retina and is best used close to the eye without contact to maximize the angle of view. This lens is a proven choice for practitioners seeking high magnification and larger ring size compared to the 90D lens, enhancing diagnostic capabilities in ophthalmology.