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  2. The 5 Best Tripod Heads For Photography and Videography - AOL

    www.aol.com/lifestyle/5-best-tripod-heads...

    Different tripod heads offer different benefits, from stability to easy rotation.

  3. Binoculars - Wikipedia

    en.wikipedia.org/wiki/Binoculars

    Because a typical binocular has 6 to 10 optical elements [52] with special characteristics and up to 20 atmosphere-to-glass surfaces, binocular manufacturers use different types of optical coatings for technical reasons and to improve the image they produce. Lens and prism optical coatings on binoculars can increase light transmission, minimize ...

  4. Opera glasses - Wikipedia

    en.wikipedia.org/wiki/Opera_glasses

    Often, modern theatre binoculars are equipped with an LED flashlight, which makes it easier to find a place in the dark. In addition to the more stereotypical binocular type, folding opera glasses were another common design. They were made mostly of metal and glass, with a leatherette cover for grip and color.

  5. Manfrotto - Wikipedia

    en.wikipedia.org/wiki/Manfrotto

    Manfrotto 190XB -tripod. Manfrotto is an Italian brand of camera and lighting supports, including tripods, monopods, and other accessories, that is manufactured by Lino Manfrotto + Co. Spa, a company headquartered in Cassola, Italy. The brand is wholly-owned by Videndum plc. [1]

  6. The 10 Best Eye Drops for Dry Eyes for Instant Relief From ...

    www.aol.com/lifestyle/10-best-eye-drops-dry...

    The best eye drops for dry eyes in 2023 work to soothe various dry eye symptoms. Here, find expert-approved picks from Refresh, Systane, Opti-Free, and more. ... The Amazon best-seller has a 4.7 ...

  7. Binocular vision - Wikipedia

    en.wikipedia.org/wiki/Binocular_vision

    Principle of binocular vision with horopter shown. In biology, binocular vision is a type of vision in which an animal has two eyes capable of facing the same direction to perceive a single three-dimensional image of its surroundings. Binocular vision does not typically refer to vision where an animal has eyes on opposite sides of its head and ...

  8. Vision therapy - Wikipedia

    en.wikipedia.org/wiki/Vision_therapy

    Vision therapy (VT), or behavioral optometry, is an umbrella term for alternative medicine treatments using eye exercises, based around the pseudoscientific claim that vision problems are the true underlying cause of learning difficulties, particularly in children. [1]

  9. List of instruments used in ophthalmology - Wikipedia

    en.wikipedia.org/wiki/List_of_instruments_used...

    to correct refractive errors of the eye; not invasive Contact lenses: to correct refractive errors of the eye; a little invasive Phoropter: used in refraction testing Tonometers: used to determine the intraoccular pressure (IOP) - useful in glaucoma; video link for various types of tonometers. Speculum: to keep the eyes open during any operation