When i'm stressed everything will start to look half and then my vision starts flashing zig zags but soon as i breath and calm down it subsides?

Ocular Migraine?: This could be an ocular migraine which occurs in the visual processing centers of the brain and results in classic zig zag lines or prismatic colors. It usually lasts minutes to hours and can be seen with the eyes open or closed. Most will go away by themselves and not be accompanied by a headache. Risk factors are similar to normal migraines.

Ocular migraines!: Ocular migraines are a form of migraines that take place in the occipital cortex (part of the brain that interprets/controls vision). They lack the severe headache as common migraines. The symptoms are usually all or mostly visual and are typically described as flashing of light or ziz-zag lights in the vision. They usually last less than 30 minutes and affect the vision out of both eyes.