For her Bachelor of Science examination thesis,
Maria Nilsson studied the function of the Seekey
at the Karolinska Institutet in Stockholm, Sweden
To the Seekey start page

The study shows that the Seekey® will assist red-green colour deficient persons to achieve an
86%
improvement at the Ishihara test for colour blindness

"A great astonishment was noticed among the participants when they saw something that they had not seen before"

The different red-green colour vision is also called colour blindness or colour deficiency.

Buy Seekey online or from UK stores
Don't hesitate to ask for more information from the inventor, Kenneth Allblom.
Phone. +46 70 291 1110
To the Seekey start page