Star Trek - Dagger of the Mind - visual effects comparison

This video compares the visual effects sequences of the classic "Star Trek" episode "Dagger of the Mind". On the left side you can see the original effects from the 1966 version of the episode, on the right side you can see the new CGI effects from digitally enhanced version of the episode. <br /> <br />Both versions can be found on the official Blu-ray release.