Your mind’s eye
Definition 1 of 1
Pro Tip 1/3Visualization Technique
Use 'your mind's eye' to describe visualizing a scene or object that isn't there, often as a mental exercise. 
With your mind's eye, picture a calm beach as you meditate.
Pro Tip 2/3Metaphorical Use
'Your mind's eye' represents an abstract, creative process, not a physical action. 
In my mind's eye, I can still see the house where I grew up.
Pro Tip 3/3Memory Recall
The phrase can imply recalling memories with vivid details, as if you are seeing them. 
He described the scene so well; I could see it in my mind's eye.