Ezer EDL-20D Diagnostic Lens; optimized aspheric design with a small retention ring for precise Indirect Ophthalmoscopy. Thanks to its tremendous versatility, the 20D lens is perhaps one of the most popular lenses used in ophthalmology today. These lenses allow professionals to obtain a wide field of view in virtually any situation. The Ezer EDL-20D offers all the benefits you look for in a 20D lens, along with specialized optical qualities found only in the highest-end diagnostic lenses. The lens is manufactured with high-transmittance glass to achieve bright, clear, distortion-free images across the entire visual field. Whether at the slit lamp or with a headband BIO, users will greatly benefit from the computer-optimized aspheric design of the EDL-20D.
Ezer Diagnostic Lens EDL-20D
Computer-optimized aspheric design
Minimizes reflections and provides high-resolution images for accurate diagnoses. Advanced optimization that ensures superior optical quality throughout the entire examination.
High-transmittance lens
Made with superior transmission glass that eliminates distortions. Delivers bright, sharp images throughout the entire visual field.
Small fixation ring
Facilitates handling and improves comfort during examination. Ergonomic design that allows greater precision in indirect ophthalmoscopy.
Exceptional clinical versatility
Compatible with slit lamp and binocular indirect ophthalmoscope with headband. Wide stereoscopic field of view, ideal for comprehensive fundus evaluation.
EDL-20D Features
▪ Exceptional Optics
▪ Computer-Optimized Aspheric Design
▪ Distortion-Free Images
▪ High-Transmittance Glass
▪ Small Grip Ring
Examination Principles
In indirect ophthalmoscopy, the fundus is illuminated by light passing through the EDL-20D lens. The returning light passes back through the EDL-20D to form a real, inverted image of the fundus between the lens and the examiner.
Advantages of Binocular Indirect Ophthalmoscopy (BIO)
The advantages of binocular indirect ophthalmoscopy over direct examination are its excellent stereoscopic field of view and the ability to assess subtle and diffuse color changes in the fundus.
Exceptional Optics
The EDL-20D is manufactured with high-transmittance glass to achieve distortion-free images. The user obtains bright and sharp images throughout the entire field.
Unique Features
The EDL-20D features a computer-optimized aspheric design that minimizes reflections and delivers high-resolution images. A small-diameter holding ring also contributes to its ease of use.
Specifications
| Image Magnification X | 2.11 |
|---|---|
| Field of View | 50° |
| Working Distance | 1.85in (47mm) |
| Focal Length | 2.04in (52mm) |
| Free Aperture | 1.9in (48mm) |
| Lens Diameter | 1.96in (50mm) |
