Table 2. VisQoL utility scores by better or worse eye category and per vision state (by VA category).

				VA categories worse eye
Better eye VA categories			Better eye only	6/12 or better	<6/12–6/18	<6/18
				No VI	Mild VI	Moderate – Severe VI
	6/12 or better	No VI	.92±.13* n = 577	.95±.10 n = 371	.90±.16* n = 111	.86±.17* n = 95
	<6/12–6/18	Mild VI	.84±.18* n = 102		.85±.17 n = 32	.84±.19 n = 70
	<6/18	Moderate –Severe VI	.71±.28*n = 128			.71±.28n = 128
Worse eye only				.95±.10*n = 371	.89±.17*n = 143	.79±.24*n = 293

VA = visual acuity, VisQoL = Vision and Quality of Life Index, *indicates significant difference (p≤0.001) between categories using post-hoc Bonferroni testing following ANCOVA. Bolded data correspond to the 6 vision states relating to combined categories of VI in the better and worse seeing eyes.