Grimaldi was not a painter but a secretary in the Vatican who documented that in 1616 or 1617, there were five copies of the Vatican Veronica made by Artist Pietro Strozzi. However, All five are known and there whereabouts accounted for. He mentioned nothing about eyes being open. All of the copies have their eyes closed.
The unfinished Grimaldi document is controversial because the frontispiece seems to show a representation of the Veronica that may, or may not, have its eyes open. That may have been an affectation of the artist who decorated the manuscript. At the size of the iconography of the image, it's a matter of interpretation of the observer whether the eyes or open or closed or not. The image is certainly not realism to the image itself.
Front Page of Grimaldi's Work
Frontpiece image
There is also evidence that someone played hanky-panky with the dating on the unfinished manuscript, changing Grimaldi's 1616 dates= of authorship by a few years to 1620, making them later than Grimaldi actually penned the document. However they did not change the dates on which Grimaldi says Strozzi painted his copies of the Vatican Veronica.
Four of the extant copies of the Vatican Veronica's Veil from 1617-1618
But, iconography of the 1600s was not realistic to what they were portraying in any case. Every other painting of the Veronica of the period showed it with open eyes.. . and it did not look at all like the obscure Manoppello Veronica at all.