You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Not an indication of given prosthesis : and explain in detail?
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