This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Glaucoma, Subject name: Ophthalmology
[{'content': 'Which of the following is not a side effect of topical beta blockers? \nSelect and explain. \nA. Hypoglycemia, B. Asthma, C. Bradycardia, D. Heterochromia iridis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Heterochromia iridis is side effect of PG analogues and not beta blockers. Beta blockers can cause hypoglycemia by blocking adrenaline action on liver to produce glucose', 'role': 'assistant'}]