Medical microscope is a high power compound light microscope with features making it suitable for application in the medical and clinical laboratories for diagnostic purposes. It is particularly useful in spotting parasites in blood samples, urine and faeces. The optical zoom of the objective of such microscopes must have at least 100x to get the desired magnification. The high magnification in medical microscope ensures visibility of the smallest component in blood and helps in identifying parasites and bacteria. To get high magnification, medical grade microscope uses top grade objective lenses. Most of these microscopes use fine quality Plan objectives that provide a flat field of view minus optical distortion as seen through straight achromatic objectives.