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Myopia can be corrected with eyeglasses, contact lenses, or by refractive surgery. [1] [16] Eyeglasses are the simplest and safest method of correction. [1] Contact lenses can provide a relatively wider corrected field of vision, but are associated with an increased risk of infection.
Cataract surgery is the most common application of lens removal surgery, and is usually associated with lens replacement. It is used to remove the natural lens of the eye when it has developed a cataract, a cloudy area in the lens that causes visual impairment. [4][10] Cataracts usually develop slowly and can affect one or both eyes. [4]
The history of the single-lens reflex camera (SLR) begins with the use of a reflex mirror in a camera obscura described in 1676, but it took a long time for the design to succeed for photographic cameras. The first patent was granted in 1861, and the first cameras were produced in 1884, but while elegantly simple in concept, they were very ...
September 17, 2024 at 10:33 AM. By Andrew Osborn. (Reuters) - The head of Russia's nuclear testing site said on Tuesday his secretive facility was ready to resume nuclear tests "at any moment" if ...
Sunday, Brady takes over as the top analyst on Fox Sports’ No. 1 NFL Sunday team, calling the first game in a season that will end with him on the mic at the Super Bowl. If this were anyone else ...
The ECB cut interest rates in June and is almost certain to ease again in September in a nod to slowing price growth. However, policy decisions further down the road are likely to be more ...