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  2. Jake Gyllenhaal Discusses Being Legally Blind and Why It's ...

    www.aol.com/jake-gyllenhaal-shares-why-being...

    To Jake Gyllenhaal, his blindness is an acting advantage. The Road House star, 43, recently spoke to The Hollywood Reporter about how he's used his legal blindness in his acting. Gyllenhaal has ...

  3. Visual impairment - Wikipedia

    en.wikipedia.org/wiki/Visual_impairment

    Legally blind indicates that a person has less than 20/200 vision in the better eye after best correction (contact lenses or glasses), or a field of vision of less than 20 degrees in the better eye. Totally blind students learn via braille or other non-visual media.

  4. Snellen chart - Wikipedia

    en.wikipedia.org/wiki/Snellen_chart

    Acuity charts are used during many kinds of vision examinations, such as "refracting" the eye to determine the best eyeglass prescription. The largest letter on an eye chart often represents an acuity of 6/60 (20/200), the value that is considered "legally blind" in the US.

  5. Jake Gyllenhaal Says Being Legally Blind Has Been ... - AOL

    www.aol.com/entertainment/jake-gyllenhaal-says...

    Dia Dipasupil/Getty Images Jake Gyllenhaal is opening up about how being legally blind has impacted his career. The actor, 43, shared with The Hollywood Reporter that he’s found his blindness to ...

  6. eSight - Wikipedia

    en.wikipedia.org/wiki/ESight

    eSight was founded in 2006 by Conrad Lewis, a Canadian electrical engineer with two legally blind sisters. His motivation was to build a device that would enable his sisters to see, be able to work and independently perform virtually all activities of daily living. [1] [2] The first generation of the device, eSight 1, was released in October.

  7. A new surgery can give legally blind people 20/20 vision - AOL

    www.aol.com/news/2016-12-15-a-new-surgery-can...

    By Nathan Rousseau Smith, Buzz60. Eyesight is arguably one of the most devastating senses a person can lose, and damaging it is all too common. According to the CDC, 3.4 million Americans aged 40 ...

  8. Jake Gyllenhaal reveals how being legally blind has improved ...

    www.aol.com/news/jake-gyllenhaal-reveals-being...

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  9. Eyeglass prescription - Wikipedia

    en.wikipedia.org/wiki/Eyeglass_prescription

    A prescription of −1.00 +0.25 × 180 describes a lens that has a horizontal power of −1.00 D and a vertical power of −0.75 D. Only ophthalmologists write prescriptions in + cylinder. An optometrist would write a prescription in - (minus) cylinder. All spectacle and contact lenses would be made in minus cylinder.