Little question

You see al those pictures made with photoshop that are really good and just wonder if those pictures are drawn totaly with the mouse. I have seen on the tutorials that you can make things with the tools for example an eye. You don´t draw the eye but you make balls and use filters. So my question is are all pictures made like that because I see it impossible to do it with a mouse.

Well some use a wacom.
A little square thing and a pen that when you draw with the pen on the square it comes straight in to the computer.
And some draw it by hand and scan, photograph it and work on that.

I'd put my bets on saying anything realistic looking in photoshop uses a wacom.

www.eyewoo.com

Well, making an eye without any "drawing" is possible, like you said with balls and filters and that. Many digital painters use both usual brushing and filter effects.
I guess if you want to make more than an eye or other small detail like that, and make it look realistic, you'd have to go for painting it. That's when it's nice to have a tablet instead of a mouse.