Navneet hid a colour-blindness screen inside a first textbook

Colour vision deficiency is easy to miss in young children because it does not look like a separate classroom problem. The usual answer would be a clinic test, an app, or a school screening drive.

Navneet and FCB chose a quieter route. Campaign Brief Asia described a primary textbook whose nature scenes, such as frogs, fish and butterflies, carry subtle Ishihara-style patterns. My Modern Met reported that the free book uses hidden numbers inside animal designs and is meant as an early screening tool, not a replacement for eye care.

The cleverness is the placement. A child does not have to be singled out for a test, and a teacher does not need new equipment. The same page that teaches can also reveal when colour-coded learning might be failing a child.

Make the textbook the test

It removed the extra appointment or app that usually blocks early detection.

The test was disguised as normal learning, reducing stigma and effort.

Print made the idea cheap to distribute through the publisher's natural channel.

A diagnostic can travel farther when it is built into the object people already use every day.

Coverage in 2025 framed the book as a design-led inclusion tool and said it could be downloaded free through Navneet's site. The transferable idea is broader than eye care: put the check inside the daily interface, so the system notices a hidden need before the user can explain it.