Is there a way to see past the first page of comments?

So sometimes I'll take a look at the posts for a commenter to gauge where they're coming from. And in some cases when they've commented one-liners often in a particular thread, almost all of the first page can be from a few threads making it less easy to figure the commenter out.

Is there a way to page beyond the first page in comments, or is there a blindingly obvious button I missed?