Original 90D lens started the slit lamp fundus examination revolution 
Small diameter ring is ideal for dynamic fundoscopy 
Outstanding general diagnostic lens, even through small pupils

Product Specifications:

- Image magnification: 0.65
- Field of view: 72 degrees
- Working distance: 10mm
- Focal Length: 12.5mm
- Clear Aperture - 18mm
- Lens diameter: 20mm