Achromatic microscopes

An achromatic microscope is a device that corrects chromatic aberration, allowing finer details and colored fuzziness of microscopically small entities to be seen more clearly. It significantly improved the study of microorganisms by providing clearer images.
 Joseph Jackson Lister England 1830 Achromatic microscopes

An achromatic microscope is a device that corrects chromatic aberration, allowing finer details and colored fuzziness of microscopically small entities to be seen more clearly. It significantly improved the study of microorganisms by providing clearer images.