But most signs pointed to people heeding medical advice that it is never wise to gaze at the sun without eye protection, even when some of it is shaded by the moon, as it was above the heads of tens of millions of Americans on Monday. There is typically no immediate way to know if you've damaged your eyes because the retina has no pain receptors.
But Dr. Rajesh Rao, an assistant professor of ophthalmology and visual sciences at the University of MI, stressed that it's never safe to look at the sun with your naked eye.
If you just caught a glimpse of the eclipse without protection, the chances of permanent eye damage are very low.
Sun exposure can cause damage to many structures in the eye. According to Dr. Linda Chous, chief eye care officer for UnitedHealthcare, you might not be out of the woods just yet.More news: Lamborghini launches Alpha-One smartphone with Android Nougat
"If the squares of that graph don't look square, or are distorted or warped and bubbled in the middle, that would be an indicator", said Lane.
■ Pinhole projection: Make a pinhole in a sheet of cardboard and hold it between the sun and a sheet of white paper on the ground.
If so, you should go see an eye doctor. There is no burning sensation.
According to Live Science, a study in Turkey after a 1976 eclipse found that any symptoms or damage still present 18 months later could last at least 15 years. "We didn't want any vision problems for the rest of their life this early", he says.
And when the next solar eclipse happens in 2024, be sure to get yourself a pair of those NASA-approved eclipse glasses to help prevent any damage to your eyes. For Tomososki, his "good eye" compensates for his "bad" one when both are open.More news: HELLBOY Smashes Into DC's INJUSTICE 2
"The portion of the retina that is burned is very tiny, called the fovea", Edmond said.
"Direct sunlight is too powerful for the retina", Emerson said. The symptoms largely depend on the type of injury at the back of the eye. So were you one of the lucky ones that ordered solar eclipse glasses on Amazon before they sold out?
At his practice in Minneapolis on Tuesday, Emerson was no busier than usual.
Across the country, Americans headed outdoors on August 21 to watch The Great American Eclipse, a rare celestial show in which the moon appeared to slide across the face of the sun.
"So we anticipate seeing quite a bit of solar damage from patients who thought they could take a quick sneak peek". There are also work-related causes. Do not remove the filter while looking at the sun.More news: Revenue Estimates Analysis Hibbett Sports, Inc. (HIBB)
Kyle Klezmer wears protective glasses as he watches Monday's eclipse while lying in the grass at Indiana University Kokomo.