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.
With sufficient magnitude almost all portions of the electromagnetic spectrum can cause. damage to the eye. For example: Lasers of a wide variety of wavelengths from the short wavelength UV (Excimer. laser for LASIK) through the visible spectrum (Argon laser for diabetic retinopathy) to short. wavelength IR (YAG laser for iridotomy and capsulectomy) are used to âdamageâ eye tissue in. the treatment of various eye conditions.