Eye worm or eye infection???

[MakNat]

What causes the eyes to discharge a bubblely substance??

 

[speckledhen]

Many, many things, some are eye worms, though I do not believe those are common, some are diseases that are nasty things and make them carriers for life. An eye infection would probably only be on one bird, not many. Here is a good chart that lists symptoms:
http://www.welphatchery.com/poultry_health.asp
http://www.msstate.edu/dept/poultry/extdis.htm

 

[Poohbear]

Buy some VetRX from co-op or tsc. Instructions for eye worm and clearing sinus is in directions.