the microscope inspired the shift in optical perspective in Gulliver's journeys to 'Lilliput' (mini people) and 'Brobdingnag' (giants)
perspectives, proportions and comparisons - characteristics of Swiftian satire
Gulliver has poor eyesight (his pocket contains a "pair of spectacles" + he looks through a "pocketperspective"); this allows him to perceive things in a different way
the giants wife reacts to Gulliver like a woman in England might react to seeing a "toad"
"their defects not to be seen but through a magnifying glass [...] the smoothest and whitestskin looks rough, and coarse, and ill-coloured."