Dutch ophthalmologist Herman Snellen developed the snellen chart in 1862. Based on a strict 5×5 unit grid. Made to measure visual acuity.
10 letters designed by Louise Sloan in 1959, following the same principles as the Snellen chart, but without the serifs. A predecessor of the logMAR charts you typically see at doctors offices today.
Optician Sans is a fully functional typeface and a continuation of the historical Snellen and Sloan letters. Optically adjusted for readability to be used as a fully functional display typeface.
The typeface, made with Sloan optotypes as the basis of construction, is the most effective letter selection for equal legibility. To make a typeface that ensures that all patients regardless of visual function, have the best possibility to see my commercial information, was a key goal for my new visual layout. This again shows the quality and passion I have for my profession, my practices and my patients.
Optometrist at Optiker-K.