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.