Microscope eyepieces (ocular lenses) are available for a number of brands of microscopes including Nikon, Olympus, Zeiss, Leica, Motic, Meiji, Fein Optic, Richter Optica, Swift Optical and National Optical. These microscope eyepieces are designed for use in compound microscopes or stereo microscopes depending on the microscope eyepiece selected.