In 2007, researchers at the University of CaliforniaâDavis determined that our Solar System was fully formed at 4.568 billion years ago. They did this by determining the age of stony materials from the asteroid belt.
When to see a doctor. See your doctor immediately if you experience the signs and symptoms of migraine with aura, such as temporary vision loss or floating spots or zigzag lines in your field of vision. Your doctor will need to rule out more-serious conditions, such as a stroke or retinal tear.
Astigmatism is a common eye problem causing blurry vision, difficulty seeing details and eye strain headaches. Ocular migraine usually refers to a type of migraine that can cause temporary blindness in one eye. Retinal detachment causes floaters in your vision, flashes of light, blind spots, loss of vision, and more. A stroke occurs when blood and oxygen to the brain are cut off, and causes numbness, confusion, and more.