Example image of eyePlorer eyePlorer map for 'Lens (optics)': Axial symmetry Light Light beam Optics Refraction Transmittance Simple lens Optical aberration Glass Plastic Transparency and translucency Electromagnetic radiation Microwave Paraffin Visible spectrum Assyria Nimrud lens Burning glass David Brewster Magnifying glass Ancient Egypt Egyptian hieroglyphs Magnification Ancient Greece Aristophanes Focus (optics) Sun The Clouds Corrective lens Emerald Gladiator Myopia Nero Pliny the Elder Roman Empire Seneca the Younger Water Lentil Lens (genus) Lens (geometry) Ibn Sahl Mathematics in medieval Islam Physics in medieval Islam Snell's law Alhazen Book of Optics Western world Latin translations of the 12th century Aspheric lens Gotland