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  1. Refractive surgery is optional eye surgery used to improve the refractive state of the eye and decrease or eliminate dependency on glasses or contact lenses. This can include various methods of surgical remodeling of the cornea ( keratomileusis ), lens implantation or lens replacement.

  2. en.wikipedia.org › wiki › LaserLaser - Wikipedia

    A telescope in the Very Large Telescope system producing four orange laser guide stars A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.The word laser is an anacronym that originated as an acronym for light amplification by stimulated emission of radiation.

  3. A sample hypnogram (electroencephalogram of sleep) showing sleep cycles characterized by increasing paradoxical (REM) sleep EEG of a mouse that shows REM sleep being characterized by prominent theta-rhythm Rapid eye movement sleep (REM sleep or REMS) is a unique phase of sleep in mammals (including humans) and birds, characterized by random rapid movement of the eyes, accompanied by low muscle ...

  4. Leonardo di ser Piero da Vinci [b] (15 April 1452 – 2 May 1519) was an Italian polymath of the High Renaissance who was active as a painter, draughtsman, engineer, scientist, theorist, sculptor, and architect. [3] While his fame initially rested on his achievements as a painter, he has also become known for his notebooks, in which he made ...

  5. The Tre Cime di Lavaredo ( Italian for 'Three Peaks of Lavaredo'; pronounced [ˌtre tˈtʃiːme di lavaˈreːdo] ), also called the Drei Zinnen ( German for 'Three Merlons '); pronounced [ˌdʁaɪ ˈtsɪnən] ⓘ ), are three distinctive battlement -like peaks, in the Sexten Dolomites of northeastern Italy. They are one of the best-known ...

  6. en.wikipedia.org › wiki › LouvreLouvre - Wikipedia

    The Louvre (English: / ˈ l uː v (r ə)/ LOOV(-rə)), or the Louvre Museum (French: Musée du Louvre [myze dy luvʁ] ), is a national art museum and gallery in Paris, France.It is located on the Right Bank of the Seine in the city's 1st arrondissement (district or ward) and home to some of the most canonical works of Western art, including the Mona Lisa, Venus de Milo, and Winged Victory.

  7. The Starry Night (Dutch: De sterrennacht) is an oil-on-canvas painting by the Dutch Post-Impressionist painter Vincent van Gogh painted in June 1889. It depicts the view from the east-facing window of his asylum room at Saint-Rémy-de-Provence, just before sunrise, with the addition of an imaginary village.[1][2][3] It has been in the ...

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