President Donald Trump isn’t often seen wearing glasses in public, but it happened on Tuesday when a photographer snapped him in his limo reading something on his phone.

Doug Mills of The New York Times captured the rare moment as Trump headed for Air Force One on the way to a campaign rally:

Wearing glasses, of course, isn’t unusual. Trump, however, has only rarely been seen in them. 

When he’s at work in the White House, Trump often dictates tweets when others are around because he does not like to be seen wearing “the reading glasses he needs to see the screen,” The New York Times reported last year.

The newspaper said an aide will print out suggested tweets in extra-large fonts for Trump to sign off on. 

He was last seen publicly wearing glasses in 2017, also through a car window:

The president also typically does not wear sunglasses. But he did don protective lenses to view a solar eclipse in 2017:

Except he also tried to view the eclipse without them:

Journalist Ashley Feinberg speculated in Slate in August that Trump’s vision ― and his aversion to wearing glasses ― might be connected to some of his infamous gaffes, including mistaking Dayton, Ohio, for Toledo in a speech after a mass shooting, even though a teleprompter in front of him showed the correct city.