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  2. Optimum HDTV viewing distance - Wikipedia

    en.wikipedia.org/wiki/Optimum_HDTV_viewing_distance

    This table can be used in a number of ways : Find the optimal distance for a given screen. Example: for a 4K UHD screen 140 cm high (112 inches diagonal), the optimal distance is 140 × 1.6 = 224 cm. Find the right screen size. Example: for a 1080 HDTV used at a distance of 250 cm, you need to find a screen whose height is close to ⁠ 250. /.

  3. Macular degeneration - Wikipedia

    en.wikipedia.org/wiki/Macular_degeneration

    It most commonly occurs in people over the age of fifty and in the United States is the most common cause of vision loss in this age group. [1] [3] About 0.4% of people between 50 and 60 have the disease, while it occurs in 0.7% of people 60 to 70, 2.3% of those 70 to 80, and nearly 12% of people over 80 years old. [3]

  4. For the millions turning 65 this year, here’s what to know ...

    www.aol.com/finance/millions-turning-65-know...

    Saiff’s scenario — including his confusion — is prevalent. And with 4.1 million Americans turning 65 this year — a record number — the decision is front and center in many households ...

  5. Pupillary distance - Wikipedia

    en.wikipedia.org/wiki/Pupillary_distance

    Distance PD is the separation between the visual axes of the eyes in their primary position, as the subject fixates on an infinitely distant object. [2] Near PD is the separation between the visual axes of the eyes, at the plane of the spectacle lenses, as the subject fixates on a near object at the intended working distance. [3]

  6. What older adults need to know about concussions

    www.aol.com/older-adults-know-concussions...

    A concussion is a mild form of traumatic brain injury, or TBI. It occurs when the skull and brain are rapidly jolted back and forth. This is usually the result of a bump, bang, or blow to the head ...

  7. Bill & Melinda Gates Foundation - Wikipedia

    en.wikipedia.org/wiki/Bill_&_Melinda_Gates...

    The Bill & Melinda Gates Foundation (BMGF) [a] is an American private foundation founded by Bill Gates and Melinda French Gates.Based in Seattle, Washington, it was launched in 2000 and is reported to be the second largest charitable foundation in the world, [7] [8] holding $69 billion in assets as of 2020. [4]

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