Hi all ,well all the vets at my practice have never seen it before ,A rodentoligist friend said although she had never seen it ,it was introduced in labs to guinea-pigs .I rescued both boys as youngsters approx 3 mths old both had cloudy eyes ,one has cleared up ,but one has suffered with his eyes over the years (they're 3 now ) the reason the vet thought herpes is because he has the spider shape webbing look on scaring on his eye like cats can show .His Eyes have never weeped & it dosen't seem to bother him as he never rubbed at it .It's just the white scarring I have been concerned about .He is seeing an eye specialist on Tuesday ,i'll keep you all that are interested up dated .He has never had sores around his mouth or genitals so they think it may have been spread through a gene . The vets are looking into as much as they can this week it's given them a challenge .He is other wise healthy ,good coat ,good weight & eats well ,i know guinea-pigs hide pain but he greets me each morning by popcorning .Watch this space .....I'm going to try to get some photos that can be shown to other vets .