Answer
Yes. Ophthalmic timolol can block the effects of beta agonists such as adrenaline during anaesthesia or emergency treatment.
Sources for this answer
- Dorzolamide/Timolol 20mg/ml + 5mg/ml eye drops, solution in single-dose container — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.