If you're a Naruto fan, then you know how the Sharingan red eyes peer deep into the soul of anyone the contact. For those who aren't Naruto fans, Sharingan have deep red eyes, circled by a thin black line with either 3 or 4 black dots arranged in a semi-circular pattern around the cornea.
Since the Sharingan are so popular, there are a few companies that have started making sharingan contact lenses. These contact lenses look exactly like you see on all of the Naruto shows. I have two of these contact lenses in person, and both looked spectactular.
The first sharingan contact lens I saw resembled a radioactive sign with 2 dots at the top and one dot in the middle below the top two dots. These contacts had a thin black line around the outside that faded into the middle. They looked good, but not as good as a the second set of contacts I saw. The second pair looked like exact duplicates.