The Army had DEW capability as far back as Gulf War I. IIRC, it was a system designed to scan for optical glass using a low power laser and then would attack the glass with higher power energy pulses that would ruin the quality of the glass (e.g. make it opaque and not useful). An additional feature was that if htere were human eyes looking through that glass (binos, rifle scopes it would blind the person.
I don't think the juice was worth the squeeze given all the negative publicity a weapon "designed to blind people" would generate. I also think that there was trepidation that if we fielded something like this then we'd let a genie out of it's bottle and we'd end up facing something similar down the road.