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.
The retina may respond to this insult by forming scar tissue or an epiretinal membrane on the surface of the retina. When this scar tissue contracts, it causes the retina to wrinkle or pucker, which distorts central vision. In addition, development of macular pucker can be more likely in patients who have had trauma, retinal tears or detachments, retinal vein occlusion, diabetic retinopathy or inflammation in the eye. Symptoms