You can grant VIEW DEFINITION permission to a user on a securable, for example a table. This lets the user see metadata of the table and any subcomponents that are related to the table, such as triggers, constraints, and indexes.he permission name is VIEW ANY DEFINITION at the server scope, but VIEW DEFINITION in all other scopes. Database Scope. VIEW DEFINITION granted at this scope effectively negates permissions-based metadata access for the grantee in the specified database.
In this article. Retinitis is a disease that threatens vision by damaging the retina -- the light-sensing tissue at the back of your eye. Although there's no cure, there are steps you can take to protect your sight and make the most of the vision you have.
Retinitis Pigmentosa Symptoms and Signs. Since retinitis pigmentosa begins as rod degeneration, the patient first notices increasing difficulty in night vision, followed by difficulty seeing in the periphery.Slowly progressive constriction of the visual field leads to tunnel vision.A small area of central vision in both eyes usually persists for years.P is sometimes associated with other systemic illnesses. Usher syndrome, characterized by retinitis pigmentosa and neural hearing loss, is the most common cause of deaf-blindness in the United States. The hearing loss usually is diagnosed earlier than the eye changes. Medically Reviewed by a Doctor on 6/4/2015.