Fibre Optics is an another Australian invention, and I vaguely understand how it works (aka,Telephones,Broadband for our computers). We also invented the "wine cask", which is now going to be adapted for DN Clear Coat, who knows the possibilities. I do know light, in opaque water (where fish live) is negliable and that's why they (fish) hide there - SOOOOOOO if there is very little light, why do we need 'fiber optic eyes', because fiber optics needs a light source to work? Just asking. pete