Assessment of the Optic Disc Morphology Using Spectral-Domain Optical Coherence Tomography and Scanning Laser Ophthalmoscopy

Table 2

Comparison of the equivalent ONH parameters measured with Cirrus OCT and HRT3 in the normal and glaucoma groups.

		Cirrus OCT				HRT3				𝑃^∗
		Min	Max	Mean	SD	Min	Max	Mean	SD
Normal group	Rim area	0.87	2.33	1.49	0.29	0.86	2.59	1.50	0.32	0.87
	Disc area	1.07	2.67	1.93	0.32	0.89	3.43	1.87	0.44	0.17
	Average C/D	0.06	0.77	0.42	0.17	0.00	0.58	0.19	0.13	<0.001
	Vertical C/D	0.06	0.74	0.40	0.16	0.00	0.74	0.26	0.22	<0.001
	Cup volume	0.00	0.78	0.10	0.13	0.00	0.48	0.07	0.09	0.050
Glaucoma group	Rim area	0.23	1.45	0.80	0.25	0.20	2.09	1.06	0.34	<0.001
	Disc area	1.45	2.53	2.02	0.26	1.30	3.82	2.11	0.41	0.013
	Average C/D	0.53	0.9	0.76	0.09	0.00	0.87	0.49	0.18	<0.001
	Vertical C/D	0.54	0.89	0.74	0.09	0.00	0.95	0.66	0.21	<0.001
	Cup volume	0.02	0.97	0.49	0.23	0.00	1.41	0.31	0.22	<0.001

∗Student’s t-test.
C/D: cup-to-disc ratio; Min: minimum; Max: maximum; SD: standard deviation.