A wide range of visual disturbances can occur that are not caused by disease, damage to the eye, or nervous system, including:

• Migraine-related such as flashes of light, bright jagged lines, or blind spots

• Particles that appear to be floating in your visual field

• Pinpoint sparks of light that are moving in your visual field

• Halos and glare

• Ghost images that remain after looking away

• Visual ‘snow’ in the entire visual field

These can sometimes result from underlying damage or disease. If medical evaluations do not identify any disease or injury, or if treatments fail to provide expected improvement, it is likely that the brain plays a role in generating or contributing to the pain or illness. This is called a neuroplastic symptom.