Unable to answer "This shop has been vacant. What’s here now?" – https://osm.org/node/11443617153 via StreetComplete 63.0:

Augenoptiker
prooptik
Deichhausweg 9 - 13
21073 Hamburg
040 776865
www.prooptik.de

Attached photo(s):
https://streetcomplete.app/p/331405.jpg