Only the most powerful energy fields caused visual distortion.

He was less worried about the globe's visual distortion because another aspect of its nature held his full attention.

Soon he began to experience visual distortion and an acute sensitivity to sound.

Or was it a visual distortion caused by the light on the rippling water?

This is best performed by a computer because there are many visual distortions that can take place due to variations in scale.

I noticed that the image itself had all sorts of visual distortion on it.

During an aura a child may have visual distortions, confusion or difficulty walking.

Some people experience visual distortions, a feeling of strength, or delusions.

The dark spot was rather an impression, a visual distortion of sorts.

He experienced some visual distortions, and lost his sense of time.