To calm those fears

Dylan had an eye appointment.  Well technically him and Emma both at the same time, which turned into a 3 hour appointment.  Yeah.  Anyway, were getting ready in the morning to go.  I explain where we are going.  The conversation went something like this:

Me:  "Dylan it's an eye appointment, the Dr. just wants to look at your eyes and see how they are doing"
Dylan:  " Is he going to take my eyeball out?"
Me:  "No"
Dylan:  "But what if we get there and he wants to take my eyeball out?"
Me:  "Well, I will tell him NO! then I would take you away so he couldn't get it"
Dylan:  "But what if he has bad guy guards at the door to try and stop you?"
Me:  "Good thing you have a strong mom, I would fight the bad guy guards, knock them to the ground and     we would escape"
Dylan:  "okay, we can go then"