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  2. Refractive error - Wikipedia

    en.wikipedia.org/wiki/Refractive_error

    When refractive errors in children are not treated, the child may be at risk of developing ambylopia, where vision may remain permanently blurry. [32] Because young children typically do not complain of blurry vision, the American Academy of Pediatrics recommends that children have yearly vision screening starting at three years old so that unknown refractive errors or other ophthalmic ...

  3. Glossary of archery terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_archery_terms

    scope (equipment) – A sight housing that resembles a scope, containing one or more pins used to align the bow with the target. Some housings, mainly used in target archery and often sold separately from the rest of the sight, can accept lenses (see clarifier). self bow (equipment) – A bow made from a single piece of material (normally wood)

  4. Telescopic sight - Wikipedia

    en.wikipedia.org/wiki/Telescopic_sight

    View through a 4× telescopic sight Leupold and Stevens Mark 6 scope with variable magnification X3-X18, mounted on an M24 SWS German military sniper rifle with a mounted telescopic sight and dismounted NSV80 clip on optoelectronic image intensifier. A telescopic sight, commonly called a scope informally, is an optical sighting device based on ...

  5. Diopter sight - Wikipedia

    en.wikipedia.org/wiki/Diopter_sight

    The diopter sight is easy to use and usually allows for very accurate aiming, because a relative long sighting line can be used. A long sighting line helps to reduce eventual angle errors and will, in case the sight has an incremental adjustment mechanism, adjust in smaller increments when compared to a further identical shorter sighting line.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  7. Ex-government minister suddenly loses eyesight - AOL

    www.aol.com/news/ex-government-minister-suddenly...

    Mick Antoniw said he quickly received sight-saving operation after experiencing blurry vision [Mick Antoniw] A former Welsh government minister has revealed that he has suddenly lost the vision in ...

  8. These are the pedophile symbols you need to know to protect ...

    www.aol.com/news/2016-04-26-these-are-the...

    Click through the see images of the symbols: Show comments. Advertisement. Advertisement. Holiday Shopping Guides. See all. AOL. Glamorous gold jewelry staples you can wear on repeat — all under ...

  9. Iron sights - Wikipedia

    en.wikipedia.org/wiki/Iron_sights

    With tangent sights, the rear sight is often used to adjust the elevation, and the front the windage. The M16A2 later M16 series rifles have a dial adjustable range calibrated rear sight, and use an elevation adjustable front sight to "zero" the rifle at a given range. The rear sight is used for windage adjustment and to change the zero range.