@ Pebble – Hey, you sure know your stuff!

Thanks for responding.
My pleasure
His eyes look perfectly normal. No swelling, no redness, he doesn’t scratch them. He looks fine. I took a pic of him when he was at his most snottiest but it hasn’t come out brilliantly. There’s actually loads of snot around his nose in this photo but you can’t really see it in the photo.
I'd rather see a picture of his eye and the bald patch.
I’m not even sure if his runny eyes/nose are getting worser actually.
They must be if he is now losing fur in this area. Many eye conditions cause some watery discharge but not sufficient to cause the problem you describe. Bald patches and sticky fur (which also means he isn;t cleaning himself) indicates a problem pig with possibly a discharge that is not just tear fluid or the milky cleaning fluid and therefore something more than an allergy
He has better days and worser days. & he got it last September but it went away and came back at Christmas. No explanation for that.
A low level infection that flares up now and then would be my thought - think myco-plasma or chlamydia. Alternatively he may have a problem going on with the tear glands or third eyelid which could also include lymph-oma invasion

& it doesn’t seem to bother him, I actually wish he would try wiping his own nose more often, it would prevent the build-up of snot around his nostrils but he doesn’t seem to care it’s there.
When you say snot - is it clear, white, yellow or green? If it is anything other than clear fluid he has an infection and needs a vet
I’m pretty sure his eyelashes are in the right location but I’ll double check tonight.
I don;t see how you can do this yourself given you don;t know what you;re looking for - again only a trained vet nurse or vet will recognise this symptom
Would an elongated tooth root problem have gotten really serious by now if he’s had symptoms since last September? Wouldn’t he have probs trying to eat?
It may not have affected his eating to date. Pigs can eat properly but still have a tooth root problem that finally shows up as problems with the eye including watery discharge. Even then they may still eat normally
I’ll have to read up more on blocked tear ducts. My rabbit had blocked tear ducts but the vets couldn’t clear them even when he was under anesthetic.

Can rodents have them unblocked whilst conscious?
No - GA would be needed. However this point is immaterial - there is not a cannula that is of sufficently small diameter to unblock a piggies tear duct...I know because I discussed this with my vet when bandit had eye problems and it was shown he had a blocked tear duct (but also lymph-oma in the third eyelid) The condition of a blocked tear duct can only be managed - firstly with a steroidal or anti-inflammatory and anti-infective eye drop to try and clear it...which works in a majority of cases. If the snot is clear and it is in the nostril from the same side as the affected eye then it suggests it is not a tear duct blockage
Because I’m not prepared to have him knocked out if this is something he can get by with.
Understand your concerns ref GA and my only suggestion is find a better vet. I travel a 40mile round trip to my vets becuase they have a really good GA record with my pigs - now approaching 30GA's with recovery every time and no probs.
However, given the severity of the discharge I don;t think he can "get by" - my entropion guinea pig does have some discharge but it doesn;t cake his fur or cause bald patches. Apart from a slightly watery eye, the fur/eyelids/cheek areas are normal - ie fluffy, healthy and intact
Do you think Johnsons baby shampoo is a bad idea then Pebble?
Until you knwow what you;re dealing with I'd say yes. All cleaning agents - be they shampoos or vet disinfectants also contain scents to produce a nice smell- which by their very nature are volatile chemicals . The vapour released will hit the eyeball and increase the irritation and worsen the problem. Try holding up a jar of vicks close to your eye and you will see what I mean
Just out of curiosity, where do you buy saline from?