Monocular microscope is a microscope with one port or eyepiece for examination of the specimen. The word monocular is derived from Late Latin monoculus, which means having one eye. Hence, a monocular microscope is a laboratory instrument for observing small objects with the help of a single lens. Such microscopes can have single or compound lenses. Single lens monocular microscopes include the various types of lenses that are also known as magnifying glasses. The functioning of such lenses is similar to that of telescopes wherein the observers use one eye to examine the distant objects. Unlike binocular or trinocular microscopes, monocular microscopes produce brighter images.