General description	Precise description	Viewer's reaction
Acceptable	1. Not noticeable	There is no glare with this light setting, and I could look at it for any length of time with no discomfort.
	2. Just noticeable	There is a small amount of glare with this light setting, but I could look at it for a long time without discomfort.
	3. Satisfactory	The level of glare is tolerable for this light setting. I could look at if for a few minutes without discomfort.
Borderline	4. Not quite satisfactory	The level of glare is a little bothersome. I might want to look away in less than a minute.
	5. Just acceptable	The level of glare is at the border of acceptability. I might want to look away in less than a minute.
	6. Bordering on disturbing	The level of glare is somewhat disturbing. I might want to look away in less than 30 s.
Undesirable	7. Disturbing	The level of glare is definitely disturbing. I would want to look away in less than 15 s.
	8. Nearly unbearable	The level of glare is nearly unbearable. I would want to look away within 5 s.
	9. Unbearable	The level of glare is definitely unbearable. I would want to look away in a second or two.