As far as the application is concerned, it can be used for perhaps for a optical company branding? The recognition factor is a huge asset in branding.
Legibility argument falls apart - otherwise we wouldn't have Zapfino and Bodoni. In certain situations, legibility takes a backseat over stylistic intentions. In other cases, yes you're right - I wouldn't want my blood test results to be misread. Another area where fonts can have devastating effects is say for example lack of a slashed 0 in nuclear missile launch codes. But we are in good hands with respect to typography and design for serious things - the Martin Baker EJECT seat handles in fighter jets don't use comic sans and they have bright yellow stripes for super fast visual recognition. :-)
(they could make a Serif variant based on Snellen instead of on Sloan)
with only the E characters of the font. It would be a welcome addition.
 http://printingcode.runemadsen.com/lecture-typography/  PDF: http://www.math.lsa.umich.edu/~millerpd/docs/501_Winter08/Kn...
That licence almost certainly does not count as "free".
Sometimes WYXZ is a hidden clue in an alternate reality game. Sometimes it is just an QWERTY typing error. (-:
I hope that M. Krzywinski gave you some inspiration for lowercase.
Font copyright and font licensing is a tricky thing. (There's an argument that some people make, for example, that bitmap fonts such as the 5x5 original Snellen glyphs, cannot be copyrighted.) The SIL Open Font Licence might have been a better choice.
(Found via http://mkweb.bcgsc.ca/snellen-optotype-font/, when searching for a Snellen font)
I see that xe went back to the original "e" shape in July 2017.
this is not a license, people, please just stick the CC license of your choice on it or something.
Yes, it is: express permission from the rights holder to do something covered by their exclusive rights is a license.
The wording is casual, but that doesn't make it not a license.
Legal departments don't want to go through the hassle of trying to keep track of hundreds of different licenses for relatively small things like fonts, so they require those sorts of resources to come with Standardized Licenses like CC or BSD.
If you belong to one of those companies that is sloppy with licensing, then you might end up using those fonts, and being legally constrained by the license, informal or not.
Either way, it's a license, and that fact affects your options.
 I had to duck it to get the correct spelling
"Rather than shaming their work for it,.." - No one is shaming their work. We are talking about the licensing terms. I love the font concept and I think its brilliant.
People should be able to share their work under common-sense terms without being sucked into Kafka's swirling cesspool of legalese and bureaucracy. The demonic inhabitants of that dimension can just... choose not to use it.
It would be great if businesses worked on common sense and honor, but that's not the world we're living in.
So think about it this way: is it worth risking your career over a silly font? Because common sense in this situation is to just do what Legal says.
If the font's creators do turn out to be loonies and start filing frivolous lawsuits, that's an ever-present (small) risk regardless of the license.
What an interesting problem, legalism as religion.
At any rate, this point is moot since they re-licensed it under a real license by the time I responded to your comment.
This license is also sufficiently unclear that I'm not sure what rights exist for licensees. With licenses that have been reviewed (such as the reviews on https://www.gnu.org/licenses/license-list.html#Fonts ) I can find amenable free software licenses.
They could have just simply said “Please feel free to use for personal or commercial use. For full license details see this link: license.txt”
Nevertheless I've been actually click-baited by the post title thinking it's a font designed for reading efficiency based on eye movement analysis.
What are some fonts actually made to help you read faster, easier and comprehend more?
Edit: This font is pretty great imo