I was working in a bookshop in Germany during my year out and, wearing contact lenses, managed to knock myself in the eye opening a parcel. Wasn't off work for long and got good medical attention but I can confirm it wasn't much fun.
One thing that did help as I sat in my room on the first night with a bandage over my eye was listening to radio coverage of our victory at Anfield over Borussia Moenchengladbach in the home leg of the final of the then equivalent of today's Europa League. I was back at work by the time of the second leg in Germany, which we lost, but the aggregate score was 3-2 to us.
Ah, the memories. 🙂