I turn away reluctant from your light,
And stand irresolute, a mind undone,
A silly, dazzled thing deprived of sight
From having looked too long upon the sun.

Edna St. Vincent Millay (1892-1950) American poet

“When I too long have looked upon your face,” ll. 5-8, Second April, Sonnet 7 (1921)
    (Source)