Buy Sharingan contact lenses from online retailers such as Amazon.com or through "Naruto"-related websites, such as NarutoEyes.com. You can also find Sharingan contact lenses on websites specializing in contact lenses and other accessories; for example, Dbeautyshop.com and Uniqso.com.
Sharingan lenses are inspired by the "Naruto" series and emulate the appearance of characters in the series, specifically the Uchiha clan. The contact lenses are characterized by black patterns on a red background, making the eyes of the wearer to resemble those of characters in the "Naruto" series. However, wearing the wrong size of contact lenses can permanently damage the eyes, so it is advisable to seek a doctor's opinion before purchasing the lenses.