The pain of the nod made him screw up his eyes.
His wife took it from him and screwed up her eyes.
He screwed up his eyes and stared into the middle distance.
He screwed up his eyes, trying to see what it was.
He screwed up his eyes and said, 'We should have the sun against us for a bit.
He screwed up his eyes in concentration and went on.
The old woman screwed up her eyes and peered once more but only for a moment.
She screwed up her eyes, tried to will away the pain.
They screwed up their eyes, trying to get used to the glare.
He screwed up his eyes and tried to see what the light was.