Contrast Sensitivity of Thyroid Associated Ophthalmopathy Patients without Obvious Optic Neuropathy

Table 3

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.