The release of adrenaline when the body prepares for the upcoming danger causes many physical changes. During an anxiety attack, the body prepares the eye to spot the slightest movement; it makes it so that the pupils beyond to let in more light.
Therefore, the anxious people are so sensitive to bright light and often wear sunglasses to help ease eye strain. Strong sensitivity to light is one of the problems with vision.
Sometimes it seems like it’s dead objects moving, flat surface rippling like ocean waves, it becomes unreal, like a dream, and sometimes you feel like looking through smoke or fog, even when you’re outdoors.
All this is connected with distorted and confused signals that the brain receives from the sensory organs during an anxiety attack. You do not have to worry about them and they will eventually disappear.