From the diary of Samuel Pepys (1663-1703)
I do truly find that I have overwrought my eyes, so that now they are become weak and apt to be tired, and all excess of light makes them sore, so that now, to the candlelight I am forced to sit by, adding the Snow upon the ground all day, my eyes are very bad, and will be worse if not helped; so my Lord Brouncker doth advise me, as a certain cure, to use Greene Spectacles, which I will do. [ ... ] I this evening did buy me a pair of green spectacles, to see whether they will help my eyes or no. -- Pepys' Diary, 24 Dec. 1666