Peripapillary Microvascularization Analysis Using Swept-Source Optical Coherence Tomography Angiography in Optic Chiasmal Compression

Table 2

Structural and functional characteristics of patients with chiasmal compression.

	Patients with chiasmal compression with ON			Patients with chiasmal compression without ON
	Preoperative (n = 6) (12 eyes)	Postoperative (n = 6) (12 eyes)	value	Preoperative (n = 6) (12 eyes)	Postop (n = 6) (11 eyes)	value
RNFL thickness, μm
Average	76.4 ± 2.3	71.8 ± 3.0	0.001	90.7 ± 2.6	88.8 ± 2.9	0.42
Temporal	48.8 ± 2.4	47.0 ± 3.3	0.06	66.8 ± 4.3	64.7 ± 1.8	0.52
Superior	97.3 ± 3.8	88.0 ± 4.8	<0.001	108.2 ± 5.6	105.7 ± 6.3	0.60
Nasal	62.6 ± 3.6	58.0 ± 2.1	0.02	70.6 ± 3.3	70.5 ± 3.9	0.96
Inferior	98.1 ± 5.4	94.4 ± 7.3	0.21	117.2 ± 1.4	117.1 ± 2.3	0.96
GCC thickness, μm		63.8 ± 3.3
Average	63.8 ± 3.2	63.8 ± 3.3	0.89	78.2 ± 4.3	77.1 ± 3.1	0.62
Visual field, dB
Mean deviation	−14.3 ± 13.0	-2.8 ± 5.5	0.003	−2.6 ± 5.6	−3.7 ± 5.4	0.32
Pattern standard deviation	8.7 ± 7.1	3.4 ± 7.2	0.04	3.8 ± 2.6	3.0 ± 3.1	0.68

Variables are displayed as mean ± standard deviation. Variables are displayed as median ± interquartile range.Estimated using generalized estimating equation regression models. ON = optic neuropathy, RNFL = retinal nerve fiber layer, GCC = ganglion cell complex. No significant differences were found in gender and age between patients with chiasmal compression and healthy controls. No disc swelling was detected in the group of patients with chiasmal compression on fundus examination. In total, 13 eyes (54.2%) had acquired dyschromatopsia (eight in the group of patients ON+). Vessel density of the radial peripapillary capillary before surgery. Bold values represent statistical significance.