This movie was a favorite of mine as a child, mainly due to the killer plants. However, it had the other interesting plot point of nearly everyone going blind as well that made this one rather interesting if not really dated at this point in time. Still nothing like a good monster movie from the early 1960's to really make for enjoyable popcorn cinema. I am not sure exactly how all the mess started in this movie, but I do remember it having sort of the same type of catalyst as the movie "Night of the Comet" and other science fiction horror movies of a meteor shower or comet cutting through the sky and leaving behind zombies, dried up humans in search of blood, or in the case of this movie blind humans and killer plants. The plant monsters look okay, not great, but better than the computer generated ones from the movie "The Ruins" anyway. There are survivors of this nightmare who were able to retain their sight. I think they just did not watch the event that caused the mess in the first place and they must try to avoid the plant monsters and sometimes the panic stricken blind people who are pretty much going to be plant food. Interesting movie, and good old school science fiction horror.