Table 2.

Visual symptoms reported by 1322 past-year poppers users

1. Since you first used poppers, do you think they have affected your eyesight?
		Total (N=1322), n (%)
No		1146 (86.7)
Maybe		130 (9.8)
Yes		29 (2.2)
Missing data		17 (1.3)

2. Have you noticed any of the following in the hours or days following poppers use?
	n	% (Based on N=1 322)	% (Based on N=159)
Blurred vision	39	3.0	24.5
Patch in the centre of vision	23	1.7	14.5
Fluctuating vision	28	2.1	17.6
Flashing lights	20	1.5	12.6
Distorted vision	10	0.8	6.3
Tunnel vision*	5	0.4	3.1
Other	23	1.7	14.5

3. What has happened to your vision problems over the last year? (N=104), n (%)
I stopped using poppers and my vision problems went away completely				27 (26.0)
I stopped using poppers and my vision problems got a bit better				10 (9.6)
I stopped using poppers but my vision problems have stayed the same				12 (11.5)
I stopped using poppers but my vision problems have got worse				4 (3.9)
I carried on using poppers but my vision problems have got better anyway				17 (16.4)
I carried on using poppers and I am still having some problems				34 (32.7)

*Quality control response option.