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P values of the difference in contrast acuity between TAO patients and healthy subjects for 5 different spatial frequencies in subjects with 1.0/1.0 visual acuity.
| Frequency | A | B | C | D | E |
|
| |||||
| P value | .043 | <.001 | <.001 | <.001 | .001 |
TAO: thyroid associated ophthalmopathy.
Letters indicate different spatial frequencies in FACT: 1.5 (A), 3 (B), 6 (C), 12 (D), and 18 (E) cycles per degree.
