Contrast Sensitivity of Thyroid Associated Ophthalmopathy Patients without Obvious Optic Neuropathy

Table 4

Significance of correlation between contrast sensitivity levels and Hertel exophthalmometer measurements and clinical activity score (CAS) in patients with TAO.

	Mean ± SD; (min–max)	P values
		A	B	C	D	E
Hertel Ex. (mm)	19.88±2.71 (16–25.5)	.559	.364	.561	.910	.471
CAS	0.60±0.81; (0.0–3.0)	.952	.826	.648	.690	.222

Hertel Ex.: Hertel exophthalmometer measurement. It is used for the measurement of exophthalmos level.
CAS: clinical activity score.
SD: standard deviation.
Letters indicate different spatial frequencies in FACT: 1.5 (A), 3 (B), 6 (C), 12 (D), and 18 (E) cycles per degree.