1) Dutch invention 2) Medical test
Found on
https://www.crosswordclues.com/clue/snellen-chart
A Snellen chart is an eye chart used by eye care professionals and others to measure visual acuity. Snellen charts are named after the Dutch ophthalmologist Hermann Snellen who developed the chart in 1862. Vision scientists now use a variation of this chart, designed by Ian Bailey and Jan Lovie at the National Vision Research Institute of Australi...
Found on
http://en.wikipedia.org/wiki/Snellen_chart
(from the article `eye, human`) ...is taken as the resolving power of the eye. The testing of the eyes by the ophthalmologist or optometrist is essentially a determination of visual ...
Found on
http://www.britannica.com/eb/a-z/s/114
a chart printed with block letters in gradually decreasing sizes, used in testing visual acuity.
Found on
http://www.encyclo.co.uk/local/21001
Test chart used for assessing visual acuity Contains rows of letters, numbers, or symbols in standardized graded sizes, with a designated distance at which each row should be legible to a normal eye Usually tested at 20 ft
Found on
http://www.eyeglossary.net/
[
n] - display consisting of a printed card with letters and numbers in lines of decreasing size
Found on
http://www.webdictionary.co.uk/definition.php?query=Snellen%20chart
noun display consisting of a printed card with letters and numbers in lines of decreasing size; used to test visual acuity
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.
