The phrase "to remove the scales" means to get rid of any hidden issues or obstacles that are blocking clear understanding or hindering progress. Full definition
Once the characters in this film are willing to remove the scales from their eyes, they can discard their old traditions and enjoy a whole new high - flying approach to life. (parentpreviews.com)
The scales would be loosened and would use a fine tooth comb to gently remove the scales. (powerfulmothering.com)
In these instances, Swanson recommends removing the flakes so it doesn't spread, and to do this, cover your baby's scalp with olive oil or baby oil, let it soak in for about 15 minutes, then remove the scales gently with fingers or a baby brush, then wash baby's head with mild shampoo. (pregnancymagazine.com)