For people in areas where the eclipse will be visible in its totality, snake-like images called shadow or light bands may appear on the ground directly before and/or after totality.
While it isn’t fully understood what causes these snake-like images, scientists consider them to be wavy lines of alternating light and dark moving in parallel patterns.
"Who better to understand [this]? What an opportunity!” Dr. Gulani said. “Being ophthalmologists where vision is so important—what a spectrum!”
An event such as this puts things in perspective, he continued, whether they be discussions about IOL choices, LASIK techniques, or complaints about traffic, technology, or life in general.
“Sit down, smile, and realize, ‘I am nothing,’” he said.