What Causes A Sensitivity To Light?

Migraines

Around eighty percent of all individuals who have a sensitivity to light also experience a migraine at the same time. However, migraines are not the only type of headache known to produce this sensitivity, and tension headaches and cluster headaches are also common culprits. Light is let into the eye and carried to the individual's brain through the visual pathways from the retina. Cones in the retina are the structures responsible for the projection of an individual's visual pathway. Other types of cells in the retina responsible for the projection of light are called melanopsin cells, which do not deactivate once they become activated by light. Both components are deeply connected to the individual's trigeminal system in the brain. It is thought that a migraine that causes both of these systems to react in a hypersensitive way to light simultaneously is the mechanism that produces a sensitivity to light.

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