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Table 2: Measurements by gestational age
Gestational age (weeks) n Lens Diameter^* Interocular Distance Globe Diameter^*
Mean (mm) SD Mean (mm) SD Mean (mm) SD
17 1 2.95 .00 11.20 .00 7.45 .00
18 0 − − − − − −
19 0 − − − − − −
20 4 3.41 .60 12.90 1.03 8.85 .66
21 6 2.87 .58 12.56 1.46 10.21 .98
22 4 3.44 .74 12.97 1.58 10.31 1.20
23 5 3.09 .48 12.71 .79 11.24 .85
24 2 4.21 .45 13.23 .40 10.53 .60
25 10 4.62 .85 17.08 1.90 12.48 1.33
26 4 4.63 .57 17.02 1.23 11.20 2.56
27 5 4.83 .55 18.04 1.31 13.49 .91
28 3 4.96 .43 16.50 .62 12.93 .94
29 3 4.44 1.22 17.12 2.46 14.00 .35
30 6 5.39 .71 17.49 1.74 14.46 .77
31 7 4.88 .14 18.25 1.94 15.27 .62
32 8 5.14 .48 19.38 2.14 16.14 1.43
33 3 5.66 .44 18.06 1.85 16.74 .30
34 14 5.11 .75 18.63 1.92 16.45 .97
35 15 5.72 .71 19.50 1.75 16.39 .70
36 9 5.86 .60 20.30 2.04 17.28 .62
37 12 5.29 1.06 18.44 2.80 16.27 1.90
38 5 5.02 1.14 18.42 2.36 16.49 2.48
39 1 5.79 .00 21.71 .00 15.84 .00
* Average of left and right eye measurements.

Gestational age (weeks)	n	Lens Diameter^*		Interocular Distance		Globe Diameter^*
Gestational age (weeks)	n	Mean (mm)	SD	Mean (mm)	SD	Mean (mm)	SD
17	1	2.95	.00	11.20	.00	7.45	.00
18	0	−	−	−	−	−	−
19	0	−	−	−	−	−	−
20	4	3.41	.60	12.90	1.03	8.85	.66
21	6	2.87	.58	12.56	1.46	10.21	.98
22	4	3.44	.74	12.97	1.58	10.31	1.20
23	5	3.09	.48	12.71	.79	11.24	.85
24	2	4.21	.45	13.23	.40	10.53	.60
25	10	4.62	.85	17.08	1.90	12.48	1.33
26	4	4.63	.57	17.02	1.23	11.20	2.56
27	5	4.83	.55	18.04	1.31	13.49	.91
28	3	4.96	.43	16.50	.62	12.93	.94
29	3	4.44	1.22	17.12	2.46	14.00	.35
30	6	5.39	.71	17.49	1.74	14.46	.77
31	7	4.88	.14	18.25	1.94	15.27	.62
32	8	5.14	.48	19.38	2.14	16.14	1.43
33	3	5.66	.44	18.06	1.85	16.74	.30
34	14	5.11	.75	18.63	1.92	16.45	.97
35	15	5.72	.71	19.50	1.75	16.39	.70
36	9	5.86	.60	20.30	2.04	17.28	.62
37	12	5.29	1.06	18.44	2.80	16.27	1.90
38	5	5.02	1.14	18.42	2.36	16.49	2.48
39	1	5.79	.00	21.71	.00	15.84	.00