Migraines and seizures can place pressure on the arteries and nerves responsible for vision, causing vision loss for the duration of the attack and possibly for minutes afterward. Doctors and patients often confuse transient bilateral visual loss for transient visual obscuration, as both issues relate to cranial pressure. Individuals describe vision loss from migraines as a zigzag pattern that flickers across a person’s sightline. In some cases, the loss of vision appears as blank or flickering spots.

Cecilie_Arcurs / Getty Images
This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.