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Polarized sunglasses neutralize horizontal reflection of light by screening it through vertically oriented polarizing filters embedded in or applied onto the sunglasses lens. Only the part of the light wave that is aligned with the microscopic openings (vertical) in the filter can pass through; the reflected light that is horizontally oriented will be blocked, and the glare will be muted significantly. These vertically oriented “polarizers” act almost like a high-tech “Venetian blind,” and they filter out the reflected light.