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. 2016 Feb 26;30(5):698–704. doi: 10.1038/eye.2016.18

Table 1. Definitions provided to patients.

•Length of wait—this is the average waiting time from arrival to finishing in the clinic per visit
•Frequency of visits—this is how often you have to come to clinic to be assessed (may require injection or not)
 
•Clinic setup—If an injection is required
○1 stop—having injection on the same day
○2 stop—required to return on a separate day for the injection
 
•Training of healthcare professional
○Nurse practitioner—a nurse who has undergone additional training to perform injections
○Doctor—a doctor who has undergone additional training to perform injections
 
•Vision
○Good—able to read small print/prices in supermarkets with good lighting
○Moderate—able to recognise faces and read newspaper headlines/writing on TV (not small print)
○Poor—able to navigate around a room and make out large objects, not able to see faces/TV/read
 
•Cost to the NHS—treatment is always free at the point of delivery, but different treatments have different costs to the health service itself
○Low cost—£50
○High cost—£500
 
•Drug injection label—a drug can be used to treat different conditions (for example, aspirin is used for pain relief (headache) and used to thin the blood (to prevent heart attacks and strokes). Each type of use is called a label and licensed drugs can have many labels. A drug may be ‘off label' if the manufacturer has not applied for recognition (label) to use this drug for a particular condition. For example, aspirin is used widely off label for prevention of heart attacks and strokes. If a drug is known to be safe and to treat a particular condition, then it can be used off label with the patients consent. Drugs may be
○On label
○Off label