Which sleep mask stays put all night without pressing on your eyes? Pillow

The category you want is contoured or cupped, where the mask has moulded eye cavities so nothing touches your lids at all. That solves the pressure problem entirely. The trade-off is bulk, and for a side sleeper the cup on the down side will press into your pillow — the fix is a mask with shallow cups and a soft rim rather than the deep rigid ones, which are made for people who sleep on their back.

Silk masks get recommended constantly and I found them the worst of the lot — beautiful, slippery, and on the floor by 3am. The ones that stayed on for me were unglamorous, matte fabric with a bit of grip against the pillowcase.

On the blurred vision: that is a known consequence of sustained pressure on the eye and it is the reason contoured masks exist. It resolving in a few minutes is typical, but if it keeps happening with a mask that is not touching your lids, that is a thing to mention to an optometrist rather than solve with shopping.

Different angle: at £40 you could instead buy a length of blackout fabric and a tension rod and make a second layer inside your existing curtain. Renting-safe, no drilling, and it fixed the streetlight problem in my flat completely. I still own a mask for travel but I stopped needing it at home.

Terse: buy two cheap contoured ones rather than one expensive one. They wear out, they get lost, and you will discover which shape suits you faster with two in the house.