If you mean the Enchroma glasses, that's different. They work where the ratio of R, G and B receptors on the retina is out of whack (that's a medical term from 'Dead men Don't Wear Plaid')

The glasses filter out the colour(s) that you have too many receptors for, the brain can then interpret the new 'equalised' input levels to get accurate colours. That's why Enchroma say it can take up to 20 minutes to work, but the longest delay I've seen in those videos is 10-20 seconds.

regards
prixat