I also do not speak Czech but Google translate did a great job of converting the web page to English.
I checked the 217 pages of the 1857 census records for the Uhersky Ostrau Jewish community.
There are separate records for the Jewish and Christian communities.
I was looking for my great-grandfather who lived there. I could not find him. I could only find one Beer family in the records.
Thus unclear to me whether the records are incomplete, whether my great-grandfather lived in an even smaller community outside Uhersky Ostrau, or whether we have it completely wrong and he lived somewhere else but was born in Uhersky Ostrau.