Blurred vision. During a migraine attack, blurred vision or difficulties focusing can be very common. Other visual disturbances have also been reported during a migraine. These visual disturbances can vary greatly between individuals. Some common visual disturbances can include flashes of light or blind spots. Some people have experienced vision loss or blindness in one eye during a migraine. Often, these visual problems last less than an hour. They can also occur before the pain of the migraine starts. This can often give a person a warning that they are about to have a migraine. This allows them the opportunity to take any medications or find a dark and quiet room to wait out the migraine.
