It can be caused by a disease called pop-eye. It usually happens when you don't have filter. When you don't have filter and you usually clean the water out everyday, your fish can get stress and trauma from all that changing water everyday and stress and trauma causes pop-eye. Or it could be that you have two goldfishes and one of your goldfishes had been playing around with the other goldfish's eye which caused it to fall.
they often fall or have a disturbing chase
Yes
Your eyes cannot "fall out"; they are bound to your brain by the optic nerves and held to the skull by the musculature used to move control them.
Predatory fish and birds will kill heaps in the wild but most goldfish are killed by people who don't look after them properly.
No
Only if he had a thing for blue eyes.
he would fall for a blue but brown is fine to
Your eyes are leaking because lack of tears. When your eyes tear its because your eyes have to let out tears this can cause your eye ball to fall out.
no. they shut theyre eyes when they go to sleep.
brandi carlile
Yes. Acually, your eyes move twice as much at night then you move your eyes in the day.
They've not got muscles to keep them up straight. Its only the water which is holding them up and making them move.