Central focus meditation can become a major tool if you desire a more realistic visual experience while advancing yourself spiritually. Follow each line in and out of the center and allow the graphic to begin to move infront of your eyes.
Sometimes I like to think of god or life as a flowing energy pattern. We control the harmony of this current through our thoughts and our emotions. Taking a deep breath and releasing all other ideas but something simple like strips of electric bands surging in and out of symmetry.