Light Sensitivity

light sensitivity

Light sensitivity, also called photophobia, is when bright light causes discomfort, pain, or an urge to close your eyes. People with it may squint, tear up, get headaches, or feel dizzy when exposed to sunlight, bright indoor lights, or computer screens. It isn’t a single disease but a symptom that can come from many different causes. Common reasons include dry eyes, irritation or injury to the surface of the eye, inflammation inside the eye, cataracts, certain medications, and neurological conditions such as migraines. The level of sensitivity varies widely — some people are only bothered by very bright sun, while others find indoor lighting or screens painful. This matters because light sensitivity can make everyday tasks like driving, walking outside, working at a computer, or playing sports uncomfortable and sometimes unsafe. Simple measures often help reduce discomfort: wearing sunglasses with UV protection and polarized lenses, using a brimmed hat outdoors, adding tinted or anti-reflective coatings to prescription glasses, and lowering screen brightness or using screen filters. Treating the underlying cause is important, so you should see an eye doctor if the problem starts suddenly, is severe, or comes with vision changes or eye pain. In many cases, addressing dry eye, changing a medication, or treating an eye infection or inflammation can greatly reduce sensitivity. With the right care and practical adjustments, most people can manage symptoms and continue their normal activities comfortably.