Table 4.

Mean difference with standard deviation and 95% limit of agreement

	Mean difference in VA	SD	95% LoA
			Upper bound	Lower bound
EyeChart–Snellen
Total	0.0242	0.0495	0.1212	−0.0728
Right eye	0.0251	0.0516	0.1262	−0.0760
Left eye	0.0232	0.0474	0.1164	−0.0697
Refractive errors	0.0327	0.0639	0.1579	−0.0925
Cataract	0.0371	0.0598	0.1543	−0.0801
Peek Acuity–Snellen
Total	−0.0225	0.0486	0.0728	−0.1177
Right eye	−0.0246	0.0502	0.0737	−0.1230
Left eye	−0.0203	0.0469	0.0716	−0.1122
Refractive errors	−0.0520	0.0596	0.0681	−0.1688
Cataract	−0.0714	0.0622	0.0505	−0.2113

SD=Standard deviation, VA=Visual acuity, LoA=Limit of agreement