The Big Dictionary of Dreams
by Martha Clarke
Blinds symbolize the relationship you have the exterior. To open them indicates willingness and good intentions to communicate. To close them, a state of isolation or confinement. To let light in through the slats manifests a certain precaution or fear of your privacy being invaded.
My Dream Interpretation
by myjellybean
To dream that you are shutting the blinds, signifies secrecy. You are concealing a personal matter or an aspect of yourself.
To dream that you are opening the blindes indicates that you are ready to reveal something hidden.
