Alien or Human Astronauts?

A high resolution photo of Apollo 17, the last mission to the Moon, shows a crew member (Cernan or Schmitt) on the lunar surface.

According to Streetcap1 who discovered the photo, there is something wrong with the astronaut’s face as it don’t look like a human face.

Is this Eugene Cernan, Harrison Schmitt or....?

Streetcap1 also wonders why the Sun Visor is raised as the astronaut would go sun blind.

 
Link original photo:
http://eol.jsc.nasa.gov/DatabaseImages/ISD/highres/AS17/AS17-134-20471.JPG