Description

The 90D Lens is an essential tool for ophthalmic professionals, designed specifically for non-contact retinal examination using a slit lamp. This lens provides exceptional visualization of critical retinal areas, including the optic disc, macula, and peripheral retina, making it invaluable for comprehensive fundus imaging.

Optical Excellence

Crafted with a double aspheric design, the 90D Lens minimizes peripheral image distortion and enhances depth of field. This optical precision ensures clear and detailed images, crucial for accurate diagnosis and assessment.

• Image Magnification: Approximately 0.76x
• Laser Spot Magnification: Approximately 1.32x

These specifications allow for detailed imaging, supporting both general and specialized retinal examinations.

Field of View

The lens offers a substantial field of view, with static angles ranging from 74° to 94° and dynamic angles from 89° to 153°, depending on the model. This wide field enables thorough examination of the retina, even in challenging cases.

Practical Design

With a working distance typically around 7 mm and a small lens diameter of approximately 30 mm, the 90D Lens is designed for comfortable handling and easy manipulation. Weighing about 9g, it provides a lightweight yet sturdy option for clinicians.

Material and Coatings

Constructed usually from high-quality glass within a metal ring, the lens often features anti-reflective coatings to enhance image clarity. Available in various colors, including Black, Blue, Gold, and more, it offers customization to suit personal preferences.

User-Friendly Features

• Non-Contact Design: Enhances patient comfort and usability.
• Versatility: Suitable for use on small or undilated pupils.
• Stereoscopic View: Provides a 3D perspective of the posterior segment.

These features make the 90D Lens a versatile and user-friendly tool, ideal for both routine clinical use and educational settings.

Maintenance

To maintain optimal performance, it is recommended to clean the lens surfaces with appropriate solutions and store it in a protective case when not in use. This ensures longevity and consistent quality in imaging.

Clinical Standard

Widely regarded as the gold standard in slit-lamp fundus examination, the 90D Lens is a trusted instrument in clinical practice. Its consistent performance and reliability are well-documented in clinical literature, making it a staple in ophthalmic diagnostics.