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  2. 'Ouch, My Right Side Hurts!' Here's What That Pain ... - AOL

    www.aol.com/ouch-side-hurts-heres-pain-005222314...

    What Is the Pain on the Right Side Under My Ribs? ... See all. AOL. The best stocking stuffers for women. AOL. 25 hostess gifts from Walmart are way better than a bottle of wine. AOL.

  3. Is right rib pain a sign of something serious? When to call ...

    www.aol.com/news/rib-pain-sign-something-serious...

    Pain on the right side of the abdomen under the ribs is a common complaint. We’ve all felt it at some point. The pain may be sharp or dull. Perhaps it was sudden or slowly crept up on you.

  4. Eye examination - Wikipedia

    en.wikipedia.org/wiki/Eye_examination

    If one can see at 20 ft what a normal person can see at 40 ft, then one has 20/40 vision. Put another way, suppose you have trouble seeing objects at a distance and you can only see out to 20 ft what a person with normal vision can see out to 200 feet, then you have 20/200 vision.

  5. Eye relief - Wikipedia

    en.wikipedia.org/wiki/Eye_relief

    The eye relief given in product specifications does not always give a realistic view of what a user can expect. Although eye-cups can usually be folded down to allow the spectacle wearer to get closer to binocular eyepieces, there are sometimes lens mountings that do not allow the theoretical eye relief to be obtained.

  6. Prism correction - Wikipedia

    en.wikipedia.org/wiki/Prism_correction

    The primary use of Prentice's rule is that under certain circumstances, the prescribed prism can be obtained without grinding prism into the lenses, by decentering the lenses as worn by the patient. An additional use of the rule is for determining the amount of unprescribed prism that is introduced if the lens is not correctly centred on the ...

  7. Using too much weight, lifting with your back instead of the legs, and even the wrong hand grip can result in pain and injuries. These include muscle strains, torn rotator cuffs, patellar ...