This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
Pseudoproptosis caused by 
Select and explain. 
A. Buphthalmos, B. Meningioma of optic nerve, C. Orbital cellulitis, D. Dermoid cyst
A: Buphthalmos
Answer: A: Buphthalmos 
Explanation: Answer- A. Buphthalmoscauses are:Buphthalmos (congenital glaucoma),High myopia,Upper lid retraction,Paralysis of the extrinsic muscles,Stimulation of muller muscle by cocaine,Shallow orbit as in craniofacial dysostosis