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  2. Astigmatism (optical systems) - Wikipedia

    en.wikipedia.org/wiki/Astigmatism_(optical_systems)

    Astigmatism causes difficulties in seeing fine detail. Astigmatism can be often corrected by glasses with a lens that has different radii of curvature in different planes (a cylindrical lens), contact lenses, or refractive surgery. [5] Astigmatism is quite common. Studies have shown that about one in three people suffers from it.

  3. Astigmatism - Wikipedia

    en.wikipedia.org/wiki/Astigmatism

    Other symptoms can include eyestrain, headaches, and trouble driving at night. [1] Astigmatism often occurs at birth and can change or develop later in life. [5] If it occurs in early life and is left untreated, it may result in amblyopia. [2] The cause of astigmatism is unclear, although it is believed to be partly related to genetic factors.

  4. Alpins method - Wikipedia

    en.wikipedia.org/wiki/Alpins_method

    The intended putt (the path from the ball to the hole) corresponds to Alpins' target-induced astigmatism vector (TIA), which is the astigmatic change (by magnitude and axis) the surgeon intends to induce to correct the patient's pre-existing astigmatism to the derived or calculated target.

  5. Corrective lens - Wikipedia

    en.wikipedia.org/wiki/Corrective_lens

    This can result in the low self-esteem of the eyeglass wearer and lead to difficulty in making friends and developing relationships. People with very high-power corrective lenses can benefit socially from contact lenses because these distortions are minimized and their facial appearance to others is normal.

  6. Stigmator - Wikipedia

    en.wikipedia.org/wiki/Stigmator

    The magnetic stigmator is a weak cylindrical lens that can correct the cylindrical component of the beam. It can consist of metal rods which induce a magnetic field, which are inserted with their long axis towards the beam center. By retracting or extending the rods, the astigmatism can be compensated. [12]

  7. “7 Little Johnstons”' Trent Learns for 'Very First Time ...

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    The consultation, Trent says, is “the very first time I've had a doctor tell me about my astigmatism, and how bad it is, and that it may not be causing my vertigo or some of my eye movement ...

  8. Why it's been so hard to kill Article 34, California's ... - AOL

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    The rule has stymied low-income home construction in California for decades, including a decision to abandon public housing in Los Angeles' Chavez Ravine neighborhood and build Dodger Stadium instead.

  9. ‘Fortnight’ lyrics meaning: Taylor Swift just explained what ...

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    No, it’s not about the video game. “Fortnight,” the first single from Taylor Swift’s “The Tortured Poets Department,” is a duet with Post Malone.. Before we delve into the lyrics, let ...

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