Special effects contacts are a finishing touch that adds drama and depth of detail to almost any costume. They are especially effective if you're going for a creepy or horrific look. I've studied the psychology behind unnatural appearances and why we fear them, and I also have done plenty of observation in the field. Mwahahaha!
In my first year of haunting I performed as a zombie on a haunted hayride, and I did not wear contacts, but I still got plenty of scares. During my second season I purchased a pair of "white out" contacts (see photo at left) and what a difference!!! I could scare people just by looking at them. I learned to time my stares and "feel my light" (a theater term for knowing when a light is shining directly on you) so that my eyes would shine directly into my victim's soul. What fun! Surprisingly, I found that most customers were not aware of the existence of such contacts, so the fact that they were obviously not my real eye color didn't seem to ruin the "magic". I cannot stress enough what a difference wearing special effects contacts made in my haunting career.
When I created Belladonna, I continued to wear my white out contacts because I wanted to keep that creepy feel while going for a more glamorous look. I think it's that discord between beauty and creepy that has made Belladonna a successful haunt/Steampunk character.
Now, before you run out and get yourself a pair of contacts there is TONS you need to know, because wearing contacts improperly can cause SERIOUS eye health issues. I fucking mean it. You can lose your eyesight, and that would majorly suck. Keep in mind that I am not an eye doctor, but I've been wearing contacts for over a decade (SFX contacts for about half that time) with few problems. If you have reservations, please see an eye care professional or see tip #1.