👉 A pseudostereoscope is a type of optical microscope that uses a lens to magnify the image by using an optical system. It is similar to a stereomicroscope, but it has fewer lenses and therefore can be more compact and portable than a stereomicroscope. The term "pseudostereoscope" refers to this type of microscope, which was invented in 1972 by Professor Robert H. J. Pincus.