Final answer:
The most appropriate nursing diagnosis in this case would be anxiety related to the possibility of permanent vision loss.
Step-by-step explanation:
The most appropriate nursing diagnosis in this case would be b. Anxiety related to the possibility of permanent vision loss. The patient's restlessness and frequent questions about the healing of the eye and the need for eye removal indicate their anxiety about the potential outcome of their condition. By addressing the patient's anxiety, the nurse can provide reassurance and support, which can help alleviate their concerns.