Vector versions of all symbols
in the Auckland Optotypes in either one Adobe illustrator or one pdf file. Each file contains four versions of the symbols: regular (black on white), vanishing #1 (White-Black-White on grey), vanishing #2 (Black-White-Black) on grey or silhouette.
Funding
Cure Kids 3707907 “An efficient, low-cost method for detecting and assessing childhood amblyopia (“lazy-eye”) using a tablet computer”