For direct ophthalmoscopy with aspherical precision optics, correction lens wheel +/- 20 dioptres and six diaphragms: slit diaphragm, large circle, small circle, half-circle, red-free (green) - large circle and and fixing aid for all ophthalmological examinations. Excellent illumination thanks to the efficient halogen bulb (REF 12.75132.003 (28946)). Can be dimmed and is completely packaged in a bag.