Volk SuperField NC Slit Lamp Lens - Black "Super 90D" - Same magnification with a wider field of view Patented double aspheric glass optics provide enhanced imaging; High index glass provides improved stereopsis and image clarity Field of View: 95/116; Image Magnification: .76x; Laser Spot: 1.3x; Working Distance 7mm Lens comes with Volk's new single lens case. Custom engraving of lens and case available, if purchased from Volk.com.