Please read description carefully.
Do not base your order on the picture presented.
Color vision screening is now as easy as using your favorite app.
The M&S Smart System Tablet (Google Nexus 7) comes pre-installed with ColorCheck color vision application to easily and quickly screen both adults and children.
ColorCheck uses Pediatric LEA Symbols and Numbers to check for protan/deutan/tritan (red/green/blue) color deficiencies.
The protocol is completely randomized ensuring accurate results.