Table 1.

Questions used to derive NEI-VFQ sub-scale scores

NEI-VFQ sub-scale	Number of questions used to derive sub-scale score	NEI-VFQ question numbers used	Questions asked
General health	1	1	Perception of overall health (5 levels)
General vision	1	2	Perception of eyesight (6 levels)
Ocular pain	2	4,19	Pain and discomfort in and around the eyes and the degree of ocular pain
Near activities	3	5,6,7	Difficulty reading ordinary print in newspapers, performing work or hobbies requiring near vision, and finding something on a crowded shelf
Distance activities	3	8,9,14	Difficulty reading street signs or names of shops, going down steps, stairs or kerbs in poor light and visiting people in unfamiliar surroundings
Vision specific:
Social functioning	2	11,13	Difficulty seeing how people react and visiting people in unfamiliar surroundings
Mental health	4	3,21,22,25	Worries and frustration about eyesight, embarrassment and loss of control caused by eyesight
Role difficulties	2	17,18	Lack of accomplishment and limitations caused by eyesight
Dependency	3	20,23,24	Need to stay at home, reliance on others, and need of help
Driving	3	15c, 16	Difficulty driving during the daytime and at night
Colour vision	1	12	Difficulty picking out and matching clothes
Peripheral vision	1	10	Difficulty noticing objects off to the side whilst walking
Total VFQ score		All	A total score averaged for the subscale scores listed above