Using a microscope for a long period of time can cause eyes to become fatigued. Olympus redesigned the SZ series of stereo zoom microscopes to reduce eyestrain and maximize user comfort. Less fatigue and eyestrain leads to more precise and consistent results in an operator's daily work.The advanced Galilean optical system, the fullfeatured SZ61, and the versatile are designed for user comfort and provide crisp 3D images with true color and high resolution.