DALLAS — We really wish these researchers would make up their damn minds!

First, they tell us smoking weed improves your eyesight. Now, we’re being told it could make you blind.

Some dudes in France got paid to test 28 weed heads and 24 people who’ve never touched the stuff to see how well they responded to electrical signals.

It didn’t go too well for the Mary Jane lovers. Here’s the problem, the study found smoking weed for six years or more damages the nerves behind your retina. That leads to poor vision and possible blindness.

So, the next time you light you, you know, in one of the states where it’s legal, you gotta ask yourself — is it worth going blind over?!