90D Description Patented double aspheric glass optics provide enhanced imaging
78D Description Patented double aspheric glass optics provide enhanced imaging High magnification provides excellent views of the optic disc and macula Perfectly corrected for field curvature, astigmatism, aberrations
20D Description 20D Lens provides an extended working distance from cornea. The 20D Aspheric slit lamp lens for non-contact fundus examinations.
Description
Double Aspheric Lens 20D 90D & 78D for ophthamology