| Description | Volk’s state-of-the-art 20D diagnostic/laser lens is perfectly corrected for field curvature, astigmatic aberrations and coma – delivering the best retinal image of any 20 diopter lens on the market. Its advanced double aspheric design further | The 40D is ideal for pediatric ophthalmoscopy and other examinations requiring expansive fundus visibility. Alternatively, this lens may be used at the slit lamp biomicroscope to provide an extremely high magnification view of the disc and macula. |