Tom's Eyes is perhaps his most recognizable trait, being completely black. He inherited this peculiar trait from his mother, a bowling ball.
In a second Tumblr post made after he left Eddsworld, Tom offers his intended explanation for his character's black eyes. Edd would often draw Tom with hollow white eyes when he was shocked. He suggested Edd replace his character's unibrow with black circles for easier animation. Tom meant for them to be fully black eyes which were caused by his character being possessed by a demon that would take control of Tom's body when he was extremely angry. Some fans think that this "demon" was portrayed as the monster in PowerEdd. Edd decided to take his own approach to the new look and portray them simply as empty sockets.
When Tom took over the show after Edd's death, it appears that the reasoning behind Tom's eyes was retconned back to demonic possession as implied by events during Eddsworld: Legacy. Tom was revealed to already be possessed in Trick or Threat making the evil girl unable to possess him like she could with Edd or Matt. In PowerEdd, Tom transforms into a demonic monster after being injured and angered by Eduardo. In The End, Edd asked Tom why he had black eyes rather than asking why he had empty eye sockets. However, Tom has stated on Tumblr that he's unsure if Matt or any of the current Eddsworld writers will continue to use the possession explanation since Tom is no longer involved with the show or the character.
When he is shown with eyes, which rarely happens, he has either sparkly eyes with eyelashes or blue eyes which shine in them. Earlier in the series, he had a unibrow where his eyes should have been and later two black eye sockets, without pupils or eyeballs. His female counterpart, Tamara, also lacks eyes. His Western ancestor, Sheriff Thompson, has one eye covered by an eyepatch.In Hammer and Fail 2, it turns out the eye sockets are in fact empty, as seen when Tom rubs his eyes after seeing the ghost, his hands go straight through the sockets. Occasionally, such as when he is surprised, he is shown with blank white eyes. Usually, when Tom gains his eyes, he (usually) loses them by getting shot with lasers.
His first appearance with empty eye sockets was in Zombeh Nation.