Hi jj~~
Sigmund has had the same issue before too. It was shortly after we renovated the studio and there was alot of dust even though we had vaccumed everything thouroughly.
Like Aimme mentioned, as long as they aren't greenish, yellowish, draining fluid, (running), or red, itching and swollen, it should be fine.
If you think it may be something enviornmental or allergens, you could try getting a solution from the vet that is like contact lens solution. It has the same natural saline content as the eye and it's used to soothe dry, tired, irritated or otherwise itchy eyes.
I hope this helps.
Charlotte &
Sigmund, German, brindle, docked tail, natural ears 17/7/99