Critics also point out that what appeals to many about Korean looks are exactly those features that make them look more Western. Koreans, related to the Mongols who once ruled the Central Asian steppes, tend to have more prominent noses and, often, lighter skin than other Asians, the country's plastic surgeons say. In physical terms, the Korean ideal is a relatively small, oval face with a high-bridged nose and large eyes with Western-style eyelids. Caucasians and many other ethnic groups have eyelids with a fold that allows them to retract. Many northeast Asians lack the fold, making their eyes appear smaller.