Yes, your symptoms could be related to your medications. Trihexyphenidyl (often prescribed alongside haloperidol) can sometimes cause visual hallucinations, especially when combined with clonazepam. Additionally, tinnitus is a known, though less common, side effect of telmisartan or fluctuations in clonazepam. Please do not panic or stop taking any of your medications abruptly, as sudden discontinuation can be unsafe. Instead, contact your prescribing doctor or psychiatrist promptly. They can safely evaluate these symptoms, review your overall regimen, including your blood pressure and cholesterol medications and adjust your dosages to help you feel better.