Table 3.

Change in contrast sensitivity measurements in various conditions

Spatial frequency (cycles)	Baseline, mean (SD)	3 months, mean (SD)	Change in 0–3 months, mean (SD)	P-value	6 months, mean (SD)	Change in 0–6 months, mean (SD)	P-value
Night testing with glare
1.5	18.6±19.4	33.3±27.9	14.7±26.5	0.001	37.5±25.7	18.9±23.7	<0.00
3	33.2±25.8	56.3±34.9	23.2±36.5	0.002	58.9±39.0	25.7±36.1	0.001
6	25.3±18.9	55.5±52.4	30.2±46.0	0.003	48.5±40.7	24.3±36.3	0.002
12	7.1±4.3	15.9±17.8	8.8±16.7	0.053	17.2±15.6	9.8±15.9	0.047
18	2.8±1.1	4.0±4.5	1.2±3.9	0.529	3.2±2.7	0.4±1.6	1.00
Night testing without glare
1.5	40.4±31.2	56.6±33.0	16.2±27.9	<0.001	65.2±30.6	24.7±31.7	<0.001
3	47.7±32.0	74.8±45.8	27.1±37.2	<0.001	81.3±45.6	33.6±48.6	<0.001
6	39.2±33.2	59.6±44.5	20.4±31.2	<0.001	74.3±59.0	34.6±48.6	<0.001
12	9.2±7.3	19.8±20.7	10.6±17.3	0.004	23.9±26.7	15.0±23.0	0.002
18	3.8±3.6	7.1±5.3	3.4±5.1	0.103	9.3±6.9	4.7±6.5	0.065
Day testing with glare
1.5	36.9±25.9	52.4±30.5	15.5±24.8	<0.001	51.7±28.7	14.8±29.5	0.002
3	56.6±34.8	84.1±41.1	27.5±35.7	<0.001	83.3±42.8	28.5±41.8	<0.001
6	56.6±34.8	81.4±51.6	24.7±43.3	0.001	88.4±58.1	32.5±51.3	<0.001
12	26.0±22.5	33.0±27.0	7.0±20.1	0.05	39.6±35.1	14.9±30.4	0.008
18	10.3±7.2	15.4±17.2	5.0±13.1	0.078	14.3±13.1	4.5±10.2	0.036
Day testing without glare
1.5	36.7±24.6	52.0±28.2	15.2±24.8	<0.001	57.0±31.3	20.1±30.9	<0.001
3	53.6±31.8	77.6±2.85	24.0±33.8	<0.001	85.9±49.4	32.2±44.5	<0.001
6	62.9±49.8	86.3±55.3	23.4±35.7	<0.001	90.3±59.4	27.1±44.5	<0.001
12	27.8±23.1	42.7±35.4	14.9±22.2	0.001	53.0±42.7	25.9±34.5	<0.001
18	8.9±7.7	13.0±14.4	4.1±11.3	0.071	14.0±11.3	4.9±10.4	0.022

Notes: Results are in response to an analysis of variance; significant P-values are those <0.05.