Is Ketorolac Advisable For A Person With Sulfa Allergy?

I have been prescribed Ketorolac, as I will be having cataract surgery in a few days. In the patient information, I noted that this drug is related to COX-1 and COX-2 inhibitors, and so have a relation to sulfa ddrugs (?). I am allergic to sulfa drugs, and had a VERY serious reaction to Celecoxib about 10 years ago. Should I speak with my ophthamologist about this first, or, as it is a topical solution, is there anything to worry about?