Table 1.

Demographic and medical disease characteristics of the participants

Characteristics	Change in visual acuity
	N	Percentage	Univariant P-values
Total	228	100
Race
Non-white	120	53	0.36
White	108	47	0.36
Sex
Women	125	55	0.90
Men	103	45	0.90
Disease
Age-related macular degeneration	73	32	0.26
Diabetic retinopathy	109	48	0.26
Others	46	20	0.26
Age
<60 years	44	19	0.006/0.008
≥60 years	184	81	0.006/0.008
Hypertension
No	69	30	0.45
Yes	159	70	0.45
Change in visual acuity with iPad
No	13	6	0.01
Yes	215	94	0.01