Optic disc morphology in unilateral branch retinal vein occlusion using spectral domain optical coherence tomography

Table 2 SER, AL, ONH parameters (mean ± standard deviation) of the affected and unaffected fellow eyes in BRVO and control eyes

	Control eyes (n=40)	BRVO patients (n=40)		p value
		Affected eyes	Unaffected fellow eyes	Affected vs control ^†	Unaffected fellow vs control ^†	Affected vs unaffected fellow ^††
SER (D)	0.70±1.41	0.89±1.51	0.95±1.65	0.606	.520	0.757
AL (mm)	23.48±0.68	22.99±0.56	23.09±0.51	0.001*	0.005*	0.052
Disc area (mm²)	1.88 ± 0.22	1.84 ±0.30	1.87 ±0.34	0.491	0.873	0.482
Cup area (mm²)	0.54 ± 0.31	0.51±0.39	0.55±0.45	0.692	0.911	0.423
Rim area (mm²)	1.31 ± 0.30	1.33±0.38	1.34±0.47	0.727	0.697	0.901
Rim V (mm³)	0.16±0.07	0.20±0.18	0.18±0.12	0.166	0.338	0.421
Cup V (mm³)	0.07±0.08	0.07±0.09	0.09±0.12	0.880	0.511	0.509
CDaR	0.30±0.18	0.27±0.19	0.29±0.22	0.485	0.796	0.492
hCDR	0.55±0.22	0.51±0.24	0.52±0.27	0.402	0.602	0.582
vCDR	0.47±0.16	0.47±0.23	0.46±0.25	0.978	0.907	0.878
aveRNFL (μm)	100.64±7.38	100.86±11.09	101.13±9.26	0.918	0.796	0.879

P-values of independent (^†) and paired (^††) t-test. Asterisk (*) indicates a difference that is considered statistically significant (p < 0.05). (Abbreviations: SER= spherical equivalent refraction, AL= axial length, V=volume, CDaR= cup-disc area ratio, hCDR=horizontal cup-disc ratio, vCDR= vertical cup-disc ratio, aveRNFL= average peripapillary retinal nerve fiber layer thickness)

ISSN: 1471-2415