Table 2. Comparison of estimated values of four parameters (VA, VFI, GC-IPL and pRNFL) among three groups of eyes.

	NF1 noOPG N = 109	NF1 -OPG N = 27	S- OPG N = 15	p
VA logMAR, mean ± SE (95CI) N = eyes	0.08 ± 0.1 (0.05–0.1) N = 109	0.19 ± 0.2 (0.16–0.23) N = 27	1.02 ± 0.1 (0.87–1.16) N = 15	<0.001
VFI, mean ± SE (95CI) % N = eyes	95 ± 0.6 (94–97) N = 42	88 ± 3.0 (83–94) N = 9	47 ± 1.8 (43–50) N = 4	<0.001
GC-IPL, mean ± SE (95CI) μm N = eyes	85 ± 0.4 (84–85) N = 103	70 ± 0.7 (68–70) N = 22	62 ± 1.4 (60–65) N = 7	<0.001
pRNFL, mean ± SE (95CI) μm N = eyes	100 ± 0.9 (98–101) N = 59	70 ± 2.1 (66–74) N = 11	77 ± 2.6 (72–83) N = 3	<0.001

VA—visual acuity, VFI- Visual Field Index, GC-IPL—ganglion cell—inner plexiform layer, pRNFL- peripapillary retinal nerve fiber layer, NF1—neurofibromatosis type 1, OPG—optic pathway glioma, S—sporadic, SE—standard error, CI—confidence interval.