How much damage does a quick glance or two do to ones unshielded eyes?
None, provided that you don't have Virgin genetics. Chads like President Trump could, in theory, stare at the sun for hours without any damage to their vision.
For hours, lol...
The Virgin glance: sheepishly looks up at the eclipse but not before putting on protective lenses, terrified of damaging his vision, probably already has to wear glasses.
The Chad glare: gazes directly at the sun fully confident in the strength and durability of his corneas, will have perfect 20/20 vision until the day he dies.