Hypersensitivity reactions eg, rash, urticaria & edema. Restlessness, excitement, nervousness, dizziness, tinnitus, blurred vision, nausea & vomiting, muscle twitching, tremors & convulsions. Numbness of tongue & perioral region. Hypotension, bradycardia, arrythmias & cardiac arrest. Severe contact keratitis & corneal damage.