This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cornea and sclera, Subject name: Ophthalmology
Staphyloma involves 
Select and explain. 
A. Iris wth conjuctiva, B. Conjuctiva with cornea, C. Choroid with retina, D. Iris with cornea
D: Iris with cornea
Answer: D: Iris with cornea 
Explanation: Staphyloma refers to a localised bulging of weak and thin outer tunic of the eyeball (cornea or sclera), lined by uveal tissue which shines through the thinned out fibrous coat. Types of staphyloma - Anterior staphyloma Intercalary staphyloma Ciliary staphyloma Equatorial staphyloma Posterior staphyloma Ref;A.K.Khurana; 6th edition; Page no:144