Any thoughts on runny eyes on heifer?

I got a heifer back in October and she has always had some runniness to her eyes.  Lately they have been running a little worse and tonight saw a little goop in one.  Any thoughts on what to use?  I don't suspect pinkeye but haven't ruled anything out either.  The steer we bought at the same time doesn't have a problem.  They are in a well venilated barn with plenty of turn out and not around any dust.  They are fed good grass hay.  We are in Indiana, so bugs and flies are not a problem right now. 

Any ideas/suggestions are welcome!

Is she doing any snotting around the nose too? Are they eating off of round bales or square bales? Do you have cattle on the other side of the fence that they can interact with? The reason I ask is because we had 2 that ended up with small colds. Their eyes water bad starting first and they were snotting around the nose soon after. We gave them some LA200 and it cleared up.

Tears of emotion.. she has a new happy home!
Maybe just the difference in hay. If she is eating and drinking water and has a big clean pen with a long run... she'll do just fine.

No snotting and they are eating square bales.  No other cattle around, just goats.  I may try the LA200.  She's feeling good and eating good though!

Thanks everyone!

usually the wild ones have eyes that pop out of their head-- or the jersey's with those big ole beautiful eyes that just pop out at you..

I've seen alot of eyes pop out, but never take off and run away O0

Good ole LA200 shot sounds like it's needed.. Cheap, easy, and good for alot of things..