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Sorry I wrote rods once when i clearly meant cones. You are correct that rods do not detect color of course, thank you for noticing the error.

Here is a pretty nice article on CVD that explores a lot of the genetics. It even mentions the enchroma (not by name of course) in the management section:

Another strategy—the use of so-called ‘notch filters’ to artificially separate the effective peak sensitivities of the expressed X-chromosome-coded photopigments in red-green anomalous trichromats—has yet to be explored fully.

This might be an older article as i believe some research on notch filters has since been done. As far as I know, there is some limited evidence that they improve performance specifically in colour discrimination tasks. There's usually no evidence that they improve overall colour perception.

Not all cases of CVD are of this kind either (although it's the most common cause), if you have monochromacy, dichromacy, or generally anything other than anomalous trichromacy, these glasses will do nothing. There are even rare cases where the eye can see colour perfectly fine and the problem is in the brain, although this is usually classified as some sort of aphasia and is not strictly speaking colour blindness.