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Comparison of ‘at home’ and ‘in clinic’ VA testing.
| WORSE EYE 1ST ‘IN CLINIC’ AND ‘AT HOME’ TEST VARIABILITY (logMAR) | WORSE EYE ‘IN CLINIC’ TEST-RETEST VARIABILITY (logMAR) | WORSE EYE ‘AT HOME’ TEST-RETEST VARIABILITY (logMAR) | |
|---|---|---|---|
| Mean Difference | –0.01 | 0.01 | 0.00 |
| 95% Confidence Interval Mean | –0.03, 0.00 | –0.01, 0.01 | –0.02, 0.02 |
| Standard deviation | 0.04 | 0.03 | 0.06 |
| 95% Confidence limits of agreement | +/–0.08 | +/–0.06 | +/–0.12 |
