This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diseases of Cornea, Subject name: Ophthalmology
Not an indication of given prosthesis : 
Select and explain. 
A. Crouzon Disease, B. OCP( Stage 1 or 2), C. Multiple failed Penetrating Keratoplasty, D. Epidermolysis Bullosa Acquisita
B: OCP( Stage 1 or 2)
Answer: B: OCP( Stage 1 or 2) 
Explanation: Boston Keratoprosthesis Indications *SJS, OCP( Stage 3 Or 4 ), TEN, Epidermolysis Bullosa Acquisita *Chemical Injury *Loss Of Lids( Crouzon Disease) *Vascularised cornea with complete stem cell deficiency And dryness *Aniridia With severe corneal changes *Multiple failed Penetrating Keratoplasty