Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Go to an emergency department for sudden vision loss, severe eye pain with abrupt vision changes, or rapidly worsening swelling that makes it difficult to close the eye.
These symptoms can threaten sight and may also be caused by conditions other than a tumor.
If you have already been diagnosed, contact your treatment team promptly if a lump grows, pain becomes persistent, numbness develops, or previous symptoms return.
New side effects after surgery or radiotherapy also deserve review.
Seek urgent same-day medical care for a rapid decline in vision, rapidly increasing eye bulging, or worsening pain with new difficulty moving the eye.
Arrange a routine medical or eye assessment if you develop persistent swelling or a lump beneath the outer upper eyelid, gradual eye displacement, unexplained double vision, or continuing pain around one eye.
These symptoms often have causes other than a tumor, but they should be examined.
Every sign above is quoted from the sofidex article on Lacrimal gland tumor. If you are not sure, err upward — it is always reasonable to be checked.