Also, here's a picture of Professor Zoom and Zoom in the comics.

[center]Zoom[/center]                                                                                             
[center][img]https://s-media-cache-ak0.pinimg.com/736x/37/57/f3/3757f30b9a39f29034e9ca7ec68e51c5.jpg[/img][/center][center][img]http://screencrush.com/442/files/2014/10/GalleryChar_1900x900_ReverseFlash_52ab86f56acee7.575264723.jpg?w=720&cdnnode=1[/img][/center]
[center]Professor Zoom[/center]

As you can see, Zoom has the visor eyes. And he's more bulkier. Also a few more differences in the costume, under than that, you can see why they both share the name, Zoom.