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2. Prism correction - Wikipedia

   en.wikipedia.org/wiki/Prism_correction

   Yoked prism can move the image away from primary gaze without the need for a constant head tilt or turn. Prism correction is measured in prism dioptres. A prescription that specifies prism correction will also specify the "base". The base is the thickest part of the lens and is opposite from the apex.

3. Monocular - Wikipedia

   en.wikipedia.org/wiki/Monocular

   Prism type – porro or roof; Lens & prism coating (the quality of coating can significantly affect light transmission and image brightness, and in the highest specifications is proportionally more expensive) Exit pupil

4. Prism (optics) - Wikipedia

   en.wikipedia.org/wiki/Prism_(optics)

   Prism (optics) An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base and rectangular sides.

5. Fresnel lens - Wikipedia

   en.wikipedia.org/wiki/Fresnel_lens

   A Fresnel lens (/ ˈ f r eɪ n ɛ l,-n əl / FRAY-nel, -⁠nəl; / ˈ f r ɛ n ɛ l,-əl / FREN-el, -⁠əl; or / f r eɪ ˈ n ɛ l / fray-NEL) is a type of composite compact lens which reduces the amount of material required compared to a conventional lens by dividing the lens into a set of concentric annular sections.

6. Why Rich People Drive Cheap Cars, and Why You Should Too - AOL

   www.aol.com/finance/why-rich-people-drive-cheap...

   Getting a car that’s not too expensive to maintain. 1. The Rich Don’t Need to Show Off, and Neither Do You ... Only 5% of American households bring in more than $250,000 a year, according to U ...

7. 5 Best Expensive-Looking Things You Can Buy at Dollar General

   www.aol.com/5-best-expensive-looking-things...

   1. Elegant Glass Dispenser. Dollar General currently has several items to make your summer entertaining more high-end. This $10 dispenser is glass, not plastic, and would look great with lemonade ...