This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroanatomy 1, Subject name: Anatomy
26 year old female patient presents to OPD with inability to focus on close objects, but can clearly see the distant objects . Most likely damage to which structure will lead to following condition ? 
Select and explain. 
A. Ciliary ganglion and oculomotor nerve, B. Oculomotor nerve and long ciliary nerve, C. Sho ciliary nerves and ciliary ganglion, D. Oculomotor and trochlear nerve
C: Sho ciliary nerves and ciliary ganglion
Answer: C: Sho ciliary nerves and ciliary ganglion 
Explanation: Damage to parasympathetic ciliary ganglion and parasympathetic fibres in sho ciliary nerve impairs the ability to focus on close objects (accommodation). Because the patient can move his eyeballs normally, the oculomotor nerve is not damaged even if this nerve contains preganglionic parasympathetic fibres. Patient can see distant objects clearly because the long ciliary nerve also carries sympathetic fibres to the dilator pupillae. Ability to move eyeball normally indicates that the oculomotor, trochlear, and abducens nerves are intact.