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2. Prism correction - Wikipedia

   en.wikipedia.org/wiki/Prism_correction

   A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. Thus a prism of 1 Δ would produce 1 cm visible displacement at 100 cm, or 1 metre. This can be represented mathematically as: = ⁡ where is the amount of prism correction in prism dioptres, and is the angle of deviation of the light.

3. 20 best Black Friday Apple deals to shop now - AOL

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   Apple iPad Pro (5th Gen) $ at Best Buy. Apple Watch Ultra. 4.7-star average rating from 402 reviews on Amazon. For extreme athletes and outdoorsy types, it doesn’t get much better than the Apple ...

4. Black Friday 2023 deals on Apple products: The best ... - AOL

   www.aol.com/lifestyle/black-friday-2023-deals-on...

   Apple MacBook Air Laptop (2023) $1,049 $1,299 Save $250. Amazon's Black Friday deal knocks a hefty $200 off the price of a well-appointed MacBook Air — and it's a 2023 model to boot. Check out ...

5. I tried those Pair Eyewear glasses with the magnetic frames ...

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   With prices starting at $60 per frame, prescription lenses included, Pair is already pretty affordable. However, for a limited time, Yahoo Life readers can save 15 percent on any Pair Eyewear ...

6. iPhone 8 - Wikipedia

   en.wikipedia.org/wiki/IPhone_8

   The iPhone 8 and 8 Plus feature a 12 MP camera with autofocus, f/1.8 aperture and optical image stabilization capable of capturing 4K video at 24, 30, or 60 frames per second, or 1080p video at 30, 60, 120 or 240 frames per second, and a Quad LED True Tone Flash with Slow Sync.

7. Ophthalmic trial frame - Wikipedia

   en.wikipedia.org/wiki/Ophthalmic_trial_frame

   ophthalmic trial frame is used to hold lenses and other accessories during correction of refractive errors. Test of. Visual acuity. A trial frame is a tool used by ophthalmic professionals like ophthalmologists and optometrists. It is basically an adjustable spectacle frame with multiple cells, used to hold corrective lenses, and other ...

8. Prism (optics) - Wikipedia

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

   A familiar dispersive prism. 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 ...

9. Score big savings on designer lenses and frames during the ...

   www.aol.com/news/score-big-savings-designer...

   EyeBuyDirect has great deals on designer eyewear for Black Friday. Get 30% off designer frames and 50% off designer lenses through November 28.