Table 2.

The modified Burden Index of Caregivers scores among caregivers of patients with varying degrees of visual impairment.

	Group 1	Group 2	P value
Time-dependent burden	0.58 ± 0.37	2.12 ± 0.89	<0.01
Emotional burden	0.37 ± 0.24	1.54 ± 0.63	<0.01
Existential burden	0.20 ± 0.17	1.15 ± 0.52	<0.01
Physical burden	0.21 ± 0.13	1.22 ± 0.58	<0.01
Service-related burden	0.17 ± 0.27	0.95 ± 0.43	<0.01
Personal estimate of overall burden	0.20 ± 0.12	1.32 ± 0.71	<0.01
Total mean BIC	2.03 ± 0.63	8.01 ± 2.25	<0.01

P value calculated using independent two-tailed t-tests showed that values for Group 2 were significantly higher for each domain. Group 1: best corrected visual acuity in the better eye > 6/60 yet worse than 6/18. Group 2: best corrected visual acuity in the better eye ≤6/60 (legally blind).