Photophobia is an abnormal sensitivity to light. It is associated with dry eye disease, migraines (severe, recurrent headaches), and traumatic brain injury (TBI). Research has found that people with ...

Unlike typical opsins, the anthozoan-specific opsin II group (ASO-II opsins) in reef-building corals use chloride ions (Cl⁻) instead of amino acids as counterions. Corals may lack eyes, but they are ...