Visual acuity · Distance refraction

WolfChart

the professional eyechart in your browser

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WolfChart duochrome test: square and ring targets on red and green halves — Customisable duochrome and filter hues

WolfChart Mallett-style fixation disparity test: O + O target with red and green nonius bars — Rotate, shuffle, mask and more...

WolfChart letter chart with acuity lines from 6/12 to 6/3, the 6/6 line marked in green — 10+ optotypes, any notation

01 Online

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The latest version of WolfChart is online now. The link will open a new tab in your browser.

WolfChart.org

02 Offline

Use WolfChart offline…

WolfChart is 100% javascript, so it works without an internet connection once open in your browser. You WILL need to first download it from the internet though. Save the archive somewhere nice, unzip it and read the readme file.

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03 App

Get the app…

The app version of WolfChart is great for tablets and smartTVs. It's available for both Android and iOS for a small charge.

Android iOS