[timmy-turner]

I'd probably make your work visible by counting the hours spent in the review each day or week. If you are able to roughly calculate the costs associated with those reviews, you may be able to push your organization towards adopting better coding or testing standards. Alternatively, instead of reviewing the code and pointing out the bugs, suggest or write a few tests which will uncover those. Showing good test coverage in action may be better than just preaching it.