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  2. Ocular myasthenia - Wikipedia

    en.wikipedia.org/wiki/Ocular_myasthenia

    Diplopia can be addressed by occlusion with eye patching, frosted lens, occluding contact lens, or by simply placing opaque tape over a portion of eyeglasses. Also, plastic prisms (Fresnel prisms) can be attached to eyeglasses of a diplopic patient, allowing for alignment of vision from both eyes in the affected direction, but are often ...

  3. Perger prism - Wikipedia

    en.wikipedia.org/wiki/Perger_prism

    A Perger prism or Perger–Porro prism system is a prism, that is used to invert (rotate by 180°) an image. The special feature of this prism is that, like a traditional double Porro prism system, it manages this with only four beam deflections and has neither a roof edge with the accompanying phase correction problems, a mirrored surface or ...

  4. Crown glass (optics) - Wikipedia

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

    The borosilicate glass Schott BK7 (glass code 517642) is an extremely common crown glass, used in precision lenses. Borosilicates contain about 10% boric oxide, have good optical and mechanical characteristics, and are resistant to chemical and environmental damage.

  5. Amici roof prism - Wikipedia

    en.wikipedia.org/wiki/Amici_roof_prism

    An Amici roof prism, named for its inventor, the Italian astronomer Giovanni Battista Amici, is a type of reflecting prism used to deviate a beam of light by 90° while simultaneously inverting the image. It is commonly used in the eyepieces of telescopes as an image erecting system. It is sometimes called an Amici prism or right angle roof ...

  6. The 12 Best Under Eye Concealers for Dark Circles, Bags, and ...

    www.aol.com/12-best-under-eye-concealers...

    Its also infused with caffeine, a common under-eye ingredient known for awakening the eye area. One shopper says: "It applies so easily with the brush, and is not too watery or too thick. The ...

  7. Periorbital puffiness - Wikipedia

    en.wikipedia.org/wiki/Periorbital_puffiness

    For someone predisposed to eye puffiness, changes to diet and lifestyle (under the supervision of a physician) may be required to reduce the possibility of swelling.. A cold compress near the eye can act as a short-term remedy as cold temperature constricts blood vessels, preventing the flow of fluid into tissues and diminishing puffiness in the process.

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