Health · Guess the stat
Guess the real numbers behind eyesight and vision correction, see how everyone else guessed, and get the source.
About what share of Americans need some form of vision correction?
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Real figures with their sources. All Optical facts →
about 50% (5 billion people)
Researchers project that by 2050, roughly half of the world's population — about 5 billion people — will have some degree of myopia.
Source: PMC / academic review on the myopia pandemic (2021) pmc.ncbi.nlm.nih.gov
about 90%
About 90% of sight loss worldwide is preventable or treatable, often with something as simple as a pair of glasses or basic eye care access.
Source: International Agency for the Prevention of Blindness (2020) visionatlas.iapb.org
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Each question asks you to guess a real number about eyesight, glasses and vision correction. After you answer you see how everyone else guessed, then the real figure and where it comes from.
Four stats and one opinion poll. A correct guess earns 100 points plus up to 50 for speed, with a combo bonus for answers in a row. The range next to the right answer earns 40. Opinion polls earn 25 for having your say, and nailing every stat adds 150.
Every stat links to its source, such as government statistics agencies, research organizations and industry groups. Figures are checked against the source before they go live.
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