Table 1. Knowledge scoring system (modified from earlier version¹⁹).

GAQ-RQ no.	Question	Patients' responses were allocated a score if the following information was included
		Scored 0	Scored 1	Scored 2	Scored 3	Max score
3	What condition do you have?	Do not know/incorrect answer	Glaucoma/ocular hypertension or raised eye pressure	NA	NA	1
4	Can you tell me which part of the eye becomes damaged in glaucoma?	Do not know/incorrect answer	Back of the eye	Retina	Optic nerve	3
5	What do you think causes the damage?	Do not know/incorrect answer	Raised pressure/weak optic nerve/poor blood supply	NA	NA	1
6	Are there any symptoms that act as a warning that glaucoma is developing?	Do not know/incorrect answer	No	NA	NA	1
7	Can you tell me what effect glaucoma has on vision if left untreated?	Do not know/incorrect answer	You go blind/you gradually go blind/you lose vision	You get tunnel vision	NA	2
8	Can you tell me what part of vision glaucoma affects the most?	Do not know/incorrect answer	Visual field/field of vision/side vision	NA	NA	1
9	Is glaucoma hereditary?	Do not know/incorrect answer	Yes	NA	NA	1
10	Can you tell me the three most important investigations/tests that are carried out regularly to monitor changes in your condition?	Do not know/incorrect answer	Either IOP measurement or visual field test or optic nerve head examination (in patients' own words)	Any two of the tests (in patients' own words)	All three tests (in patients own words)	3
11	Do you know the name(s) of the drop(s) that has/have been prescribed for you?	Do not know/incorrect answer	Yes (drop(s) named and answers checked against prescription)	NA	NA	1
12	Do you know what the drops do?	Do not know/incorrect answer	Lower/reduce/control eye pressure	NA	NA	1
13	How can you tell the drops are working?	Do not know/incorrect answer	I cannot/the doctor tells me at clinic	NA	NA	1
14	Do you know how long you will have to use drops for?	Do not know/incorrect answer	For life/forever	NA	NA	1
15	How often do you collect prescriptions?	Do not know/incorrect answer	Collects 1 bottle per 28 days/month or 2 bottles every 2 months, etc.	NA	NA	1
17	After opening a bottle do you know how long you can use drops before they expire?	Do not know/incorrect answer	1 month/28 days	NA	NA	1
Total						19