Snellen chart
C2CEFR level
85/100Rarity: very rare
TechnicalRegister
A chart of letters in decreasing sizes used to test distance visual acuity.
Ask the patient to read down the Snellen chart from six metres, covering one eye at a time.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
Get words like Snellen chart on your lock screen, a few a day, with review that makes them stick.
Download on the App Store Lexfall puts a new word on your home and lock screen through widgets, so you learn without opening an app. Free to download. After a free trial, a subscription unlocks every field. Built for iPhone, iOS 15.1 or later.
On a computer?Scan with your iPhone camera.