20D Double Aspheric Ophthalmic Diagnostic Lens, 20D Lens provides an extended working distance from cornea. Comes in wooden case for safety and elegance The 20D Aspheric slit lamp lens for non-contact fundus examinations. 20D Slit Lamp Lens offers an ideal combination of field and magnification Sterilizable, Perfect equilibrium of magnification and field of view. Perfectly corrected for field curvature, astigmatism, aberrations and coma.
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