10 Pink Eye Symptoms
7. Light Sensitivity
While not everyone reports this symptom, some people experience sensitivity to light. It can manifest as an irritation that makes it difficult to keep the eyes open in sunlight, or as a feeling of actual pain. While the pain is not as intense as photophobia experienced during migraine headaches, it can be uncomfortable.
When light hits the rod and cone cells on the back of the eye, the brain normally perceives light and color. Because these cells are located near brain regions that process pain through the optic nerve, an infection can cause them to function abnormally, causing the brain to interpret the sensation as pain.
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