Description

The 90D Lens is an essential tool for ophthalmic professionals, designed for precise fundus examination through slit lamp biomicroscopy. Its double-aspheric optical design ensures minimal peripheral image distortion, providing a clear and detailed view of the retina. This lens is particularly effective for visualizing critical areas such as the optic disc, macula, and retinal arcades, even in patients with undilated or small pupils.

Key Features

• Image Magnification: The lens offers a 0.76x image magnification, creating a real, inverted, and reversed image of the retina. This is complemented by a laser spot magnification of 1.32x, enhancing diagnostic capabilities.
• Field of View: With a static field of view of 74° and a dynamic field of view of 89°, the 90D Lens provides comprehensive retinal visualization.
• Working Distance: A 7 mm working distance allows for comfortable use, maintaining a safe space between the lens and the cornea.

Design and Material

Crafted from high-quality optical glass, the lens boasts a small diameter, making it easy to handle and ideal for use with small pupils. Its high transmittance, typically over 95%, ensures excellent image quality, offering a magnified, stereoscopic view of the posterior segment.

Versatility and Use

Available in a variety of colors, the 90D Lens is compatible with most slit lamp biomicroscopes, making it suitable for both dilated and undilated pupil examinations. It is widely used in clinical settings, teaching, and research, often regarded as the gold standard for slit lamp fundus examination.

Advantages

The lens's small diameter ring facilitates dynamic examination and ease of manipulation within the orbit. It is user-friendly, making it suitable for training students and residents. Its balance of field of view and magnification makes it a reliable tool in the diagnosis and management of retinal diseases.

Maintenance

Maintaining the 90D Lens is straightforward, with cleaning recommended using standard optical lens care methods, such as alcohol wipes. This ensures longevity and consistent performance.

Certifications

While certifications may vary by manufacturer, common certifications include CE, FDA, ISO13485, RoHS, and ISO9001, underscoring its quality and reliability in clinical practice.

The 90D Lens remains a vital instrument for detailed retinal assessment, offering ease of use and exceptional image quality, making it indispensable in ophthalmic diagnostics.