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
Which of the following structure(s) is/are preserved in enucleation? 
Select and explain. 
A. Eye lids, B. Iris, C. Sclera, D. Extraocular muscles
A: Eye lids
Answer: A: Eye lids 
Explanation: Exenteration All the contents of orbit with its periorbital tissue, appendages, eyelids is removed Indications are rapidly spreading life threatening malignant tumors like sebaceous cell carcinoma, advanced retinoblastoma, melanomas, rhinocerebral mucormycosis Reconstruction of eye socket with lattisimus dorsi or pectoralis major flap can be done afterwards Enucleation Refers to excision of the eyeball. Can be performed under L.A in adults and under G.A in children. Evisceration Removal of the contents of the eyeball leaving behind the sclera Orbitotomy Refers to surgical approach for an orbital mass lesion 4 types: anterior orbitotomy,Lateral orbitotomy,Transfrontal orbitotomy,Temporofrontal orbitotomy