There's a green tint to it because of the dye vet put in she did say she saw a small scratch/cut but doesn't think the issue is that thanks to anyone experienced with this
- And got the T-shirt
Can he blink? If so, and if there's no infection in the eye, it might not have to be removed. You'll just have to treat with the antibiotics and see if it clears up.
If he can't blink, call the vet back and ask for some ointment to keep the eye lubricated. Dry eye is very painful, and ointments work better than drops to keep the eye from drying out.
Can your guinea pig close its eye? Do you occasionally see milky fluid (this is cleaning fluid and helps to lubricate the eye naturally)?
Some guinea pigs that do not have adequate tear production do need frequent lubrication. Creams will stay in the eye longer than drops.