That's correct. When hand feeding morays in the wild or captivity, they are near sighted. They have excellent smelling capability, but need to be within inches of the food to see it. This is how people get accidentally bit. In the wild, I have had them swim into my buoyancy compensator (BC) looking for food. Once in Hawaii I had to abandon my dive gear on the bottom because a 3' spotted moray named "Snaggletooth" (and he was full of teeth) got under my BC against my skin and decided he liked it there.
First two shots are spotted morays, third one is a Hawaiian conger moray. It's that second one that was called Snaggletooth (he had a tooth poking out on his right side) that a few seconds after taking this picture he decided to join me on my dive.