Decreased Retinal Thickness in Type 1 Diabetic Children with Signs of Nonproliferative Diabetic Retinopathy

Table 4

Retinal thickness and volume reference values for each ETDRS sector, calculated with measurements from healthy controls.

Retinal sector	Percentiles
	3	10	25	50	75	90	97	Average ± SD
Foveolar thickness (μm)	165	172.5	181	192	205	222	230	194.1 ± 17.9
Total macular volume (mm^3)	7.07	7.26	7.42	7.60	7.76	8.06	8.20	7.62 ± 0.29
Macular central thickness (μm)	194.3	209	217.2	229	245	255	267.3	230.4 ± 18.7
Superior inner thickness (μm)	272.9	287	295	302	311	318	322.3	301.8 ± 12.9
Temporal inner thickness (μm)	265.3	275	280	289	298	304	310.3	288.3 ± 12
Inferior inner thickness (μm)	269	283	289.2	297	306.7	312.5	321	297.1 ± 12.8
Nasal inner thickness (μm)	282	289	296	304	312	320	328.9	304 ± 11.7
Superior outer thickness (μm)	241.5	247.3	256	263	272	282.7	295	264.8 ± 15.8
Temporal outer thickness (μm)	213.6	233	238	249	256	263.6	273	247.8 ± 13
Inferior outer thickness (μm)	238	241	249	256.5	263	274	288.3	257.6 ± 12.6
Nasal outer thickness (μm)	253.7	263.5	271	280	287	297	307.6	279.8 ± 12.8
Central macular volume (mm^3)	0.15	0.16	0.17	0.18	0.19	0.20	0.21	0.18 ± 0.01
Superior inner volume (mm^3)	0.44	0.45	0.46	0.47	0.49	0.50	0.51	0.48 ± 0.08
Temporal inner volume (mm^3)	0.41	0.43	0.44	0.45	0.47	0.48	0.48	0.45 ± 0.03
Inferior inner volume (mm^3)	0.42	0.45	0.46	0.47	0.48	0.49	0.5	0.46 ± 0.02
Nasal inner volume (mm^3)	0.44	0.45	0.46	0.48	0.49	0.50	0.51	0.47 ± 0.02
Superior outer volume (mm^3)	1.28	1.31	1.35	1.39	1.43	1.49	1.53	1.39 ± 0.07
Temporal outer volume (mm^3)	1.23	1.24	1.28	1.32	1.36	1.41	1.50	1.32 ± 0.07
Inferior outer volume (mm^3)	1.26	1.28	1.32	1.36	1.38	1.45	1.52	1.36 ± 0.06
Nasal outer volume (mm^3)	1.35	1.40	1.44	1.49	1.53	1.57	1.60	1.48 ± 0.06
Total RNFL thickness (μm)	84.5	89	92	97	101	106	112.4	97 ± 6.6
Superior RNFL thickness (μm)	102	107	113	119	126	135	143	120.1 ± 11.0
Inferior RNFL thickness (μm)	98	107	113	120	127	133	138.4	119.9 ± 10.4