I always had great near sight, though that is diminishing, ( with the trade-off of not great long sight ), so this is not for me. It's simply that the font size for the dates in the hovers on the main page, are barely readable. eg: ''7 hours' or '14 hours' ago.
Don't really think my set-up is unusual > 40 images a page, 100% zoom. I can read the rest of the hover OK, it's just that bit, and it is a fairly important bit. I think users with sight disability must be very disadvantaged. As far as I can recall, this is newish, since I never noticed this before.