Create a use-case description for the process of buying glasses from the viewpoint of the patient. The first step is to see an eye doctor who will give you a prescription. Once you have a prescription, you go to an optical dispensary, where you select your frames and place the order for your glasses. Once the glasses have been made, you return to the store for a fitting and pay for the glasses.

Use Case Name:	ID:1		Importance Level: High
Primary Actor:		Use Case Type:
Stakeholders & Interests:
Brief Description:
Trigger:
Relationships:

1 Use Case Name: Maintain Available Rental Unit Information ID: Importance Level: High Primary Actor: Apartment Owner Use Case Type: Detail, Essential Stakeholders and Interests: Apartment Owner-wants to advertise available apartment Campus Housing Service-provides a service that enables the apartment owners to rent their available apartments Brief Description: This use case describes how the campus housing service can maintain an up-to-date listing of available apartments Trigger: Apartment Owner wants to add or delete an available apartment External Relationships: Association: Apartment Owner Include: Extend: Generalization: Type