The standard color blindness test becomes a surprisingly colorful effect. Liam Levanon has transformed a scientific phenomenon into a captivating presentation for a color-changing effect that never fails to surprise the audience. See the world in a new color when you perform the Ishihara Test.

The Ishihara Test goes as follows:

You introduce a small deck of cards with gray backs

, covered in strange green and red dots

that form patterns with numbers. You explain that this is the standard test

to check if someone is red-green colorblind. If they can see the numbers in the patterns, they are not colorblind.

However, if they cannot see the numbers, it might be wise to have their eyes checked.

After confirming that everyone can see the numbers, you make a magical gesture

and change the way your audience perceives colors. When you show the cards again, the audience is momentarily confused because everything looks the same. Then you flip the cards over, and the gray backs

have turned into a rainbow of colors

. The cards can then be handed out immediately for further examination.

The Ishihara Test

immediately captivates any audience because it’s based on the actual color blindness test. Liam Levanon shares with you an extremely simple magic trick that makes this effect convincing and surprising

. The specially printed cards do almost all the work for you. There are no flaps or sliding panels

, and the vibrant colors

seem to practically jump off the cards. This is perfect to carry in your wallet for when you want to perform an unexpected miracle.

Get ready to test their vision—and their reality—when you perform Liam Levanon’s Ishihara Test.

“Clever quick trick to carry in your wallet. It has a unique and well motivated plot that’s guaranteed to get a scream!”

– Oz Pearlman

“Liam showed me that trick the first time we met at the Ruskin in Blackpool in 2022. I LOVED IT and urged him to release it! Unlike most color-changing card effects, it has an emotional hook and is so logical. I’ll be carrying this one in my pockets right now and will probably use it right after Color Monte (yup, it’s that good!)”

– Michel Huot

“This is more than an effect – it’s a conversation piece with a great hook. The punch is so strong because they never see it coming…”

– Lior Manor