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Health · Guess the stat

How well do you know eyesight and glasses?

Guess the real numbers behind eyesight and vision correction, see how everyone else guessed, and get the source.

Guess the statOne tap · see how everyone guessed

About what share of Americans need some form of vision correction?

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eyesight, glasses and vision correction
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Optical by the numbers

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about 50% (5 billion people)

By 2050, about what share of the world's population is projected to have some degree of myopia?

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 1.1 billion

About how many people worldwide live with some form of vision impairment or sight loss?

The IAPB Vision Atlas estimates 1.1 billion people worldwide live with some degree of sight loss, from mild vision impairment to full blindness.

Source: International Agency for the Prevention of Blindness (2020) visionatlas.iapb.org

What people think about eyesight, glasses and vision correction

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If you needed glasses, what style would you want?

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What's the most annoying thing about wearing glasses?

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How do you feel about screen time affecting eyesight?

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One Optical stat a week

A surprising, sourced eyesight, glasses and vision correction number and that week's poll, in your inbox every Monday. Free, and you can stop any time.

Questions

How does OpticalSurvey.com work?

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.

How is the daily round scored?

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.

Where do the numbers come from?

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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