Specification :Lens 90D , Field of view 940,Image Mag.0.75X, Aperture 18mm,Working Distance 5mm Features & Benefits: 1. Double Aspheric glass optics provide Clear imaging. 2. Small Diameter ring is Ideal for Dynamic Fundoscopy. 3. Outstanding General Diagnostic Lens, Even through Small Pupils. 78D Aspheric Lens 1. Patented double aspheric glass optics provide enhanced imaging 2. High magnification provides excellent views of the optic disc and macula 3. Perfectly corrected for field curvature, astigmatism, aberrations and com
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