By Stephen Orr, MD, Ophthalmology
Medical Staff Member - Blanchard Valley Health System
The residents in this area will have a front-row seat for the total eclipse of the sun on Monday, April 8, 2024. For many, this will be a once-in-a-lifetime opportunity. With proper preparation and precautions, it is possible to safely observe the eclipse without damaging your eyes.
“Eclipse blindness” is caused by the exposure of the retina (the back part of the eye) to high-intensity visible light. The rods and cones (the cells responsible for vision) can be permanently damaged by prolonged exposure to direct sunlight during an event like an eclipse, even when there does not appear to be much light from the sun. This damage can cause permanent, irreversible visual loss by two different mechanisms. First, the light itself causes chemical reactions within the cells that cause them to stop functioning. Second, the actual heat from the sun burns and destroys certain layers of the retina. The end result is visual loss that can be permanent, and for which there is no current treatment.
