This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Orbital Disorders, Subject name: Ophthalmology
[{'content': 'Not a cause for pseudo-proptosis in the following options \nSelect and explain. \nA. Hypermetropia, B. Lagophthalmos, C. Lid retraction, D. Enophthalmos of fellow eye', 'role': 'user'}, {'content': "Answer: A \nExplanation: Causes of pseudoproptosis *Myopia *Lagophthalmos *Lid retraction *Enophthalmos of fellow eye * Stimulation of Muller's muscle by cocaine * Shallow orbits (as in craniofacial dysostosis.)", 'role': 'assistant'}]