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2. Prism correction - Wikipedia

   en.wikipedia.org/wiki/Prism_correction

   Eye care professionals use prism correction as a component of some eyeglass prescriptions. A lens which includes some amount of prism correction will displace the viewed image horizontally, vertically, or a combination of both directions. The most common application for this is the treatment of strabismus. By moving the image in front of the ...

3. Zenni Optical - Wikipedia

   en.wikipedia.org/wiki/Zenni_Optical

   www .zennioptical .com. Zenni Optical (formerly 19dollareyeglasses.com) is an American online retailer of prescription glasses and sunglasses. Founded in 2003 by Tibor Laczay and Julia Zhen, it is based in Novato, California . The company sells more than 2,000 types of prescription glasses and sunglasses as well as 45 types of contact lenses.

4. Adjustable-focus eyeglasses - Wikipedia

   en.wikipedia.org/wiki/Adjustable-focus_eyeglasses

   Adjustable focus lenses, like single-focus lenses, also reduce image-jump and spatial distortion in the field of view associated with traditional multi-focal lenses. Additionally, the ideal near-vision correction can be achieved with precision, because the variable lenses emulate the focusing action of the youthful (non-presbyopic) eye.

5. 10 Walmart Brand Grocery Items That Are Often Cheaper at Aldi

   www.aol.com/10-walmart-brand-grocery-items...

   Chicken. Aldi: $2.19 per pound. Walmart: $3.97 per pound. Price difference: $1.78 per pound. Be Aware: 6 Things You Shouldn’t Buy at Walmart While on a Retirement Budget.

6. History of the single-lens reflex camera - Wikipedia

   en.wikipedia.org/wiki/History_of_the_single-lens...

   The history of the single-lens reflex camera (SLR) begins with the use of a reflex mirror in a camera obscura described in 1676, but it took a long time for the design to succeed for photographic cameras. The first patent was granted in 1861, and the first cameras were produced in 1884, but while elegantly simple in concept, they were very ...

7. This Walmart Brand Secretly Has So Many Luxe Pieces for ... - AOL

   www.aol.com/entertainment/walmart-brand-secretly...

   Walmart Has a Secret Brand That Makes My Designer Pieces Look Cheap — Starting at $10 Last month, we uncovered designer qualit Brands have showcased so many trendy summer essentials and we can ...

8. Shop Walmart's secret sale room and save big on brands we ...

   www.aol.com/lifestyle/shop-walmarts-secret-sale...

   Samsung 65" Class S90C Oled 4K Smart TV. $1,597 $3,299 Save $1,702. We couldn't believe it either at first, but it's true — Walmart has slashed $1,700 off this Samsung 65-inch smart TV. Prepare ...

9. Eyeglass prescription - Wikipedia

   en.wikipedia.org/wiki/Eyeglass_prescription

   Eyeglass prescription. Using a phoropter to determine a prescription for eyeglasses. An eyeglass prescription is an order written by an eyewear prescriber, such as an optometrist, that specifies the value of all parameters the prescriber has deemed necessary to construct and/or dispense corrective lenses appropriate for a patient.