who are in critical condition due to heart disease, kidney disease, cancer, Parkinson's,/Alzheimer's, head injury, spinal injury or sickle cell anemia, unable to care for themselves and unable to recover. In the case of a prisoner who has been recommended by the government doctor as blind or blind in both eyes or unable to move both legs, or is crippled and unable to recover, the prison administrator may release the rest of his imprisonment to the custody of his family member after taking the approval of the department.