Table 2.

Comparison of retinal nerve fiber layer thickness, as measured with scanning laser polarimetry, between eyes with optic disc swelling and age-adjusted normative data

	NAION versus normal	PE versus normal	ON versus normal
Average
SLP	51.7±10.9 versus 55.3	63.5±10.5 versus 56.3	62.7±5.3 versus 56.7
P-value*	0.182	0.008	0.006
Superior
SLP	58.5±13.6 versus 66.3	73.5±8.6 versus 68.6	76.0±10.5 versus 69.4
P-value*	0.026	0.021	0.079
Inferior
SLP	66.6±17.0 versus 63.9	75.1±16.8 versus 66.0	78.2±11.2 versus 66.7
P-value*	0.508	0.030	0.010

Notes:

^*Student’s t-test.

Abbreviations: NAION, nonarteritic anterior ischemic optic neuropathy; ON, optic neuritis; PE, papilledema; SLP, scanning laser polarimetry.