Table 2.
Average fibril diameter (and standard deviation) across the central 6 mm, alongside the position of significant increase, the average distance from the corneal center at which the observed increase in fibril diameter with proximity to the limbus became significant
| Scan (direction) | Avg. Fibril diameter (central 6 mm), nm |
Position of significant increase, mm |
||||
|---|---|---|---|---|---|---|
| Cornea 3 | Cornea 4 | Cornea 3 | Cornea 4 | Avg. | Model | |
| 1 (vert) | 36.7(± 0.5) | 34.4(± 0.6) | 4.0 | 3.5 | 3.75(± 0.5) | 3.5 |
| 2 (diag) | 36.4(± 0.4) | 33.9(± 0.5) | 3.75 | 3.5 | 3.63(±0.3) | 3.25 |
| 3 (hor) | 36.0(± 0.3) | 34.2(± 0.4) | 4.0 | 4.0 | 4.0(±0.4) | 4.5 |
| 4 (diag) | 36.3(± 0.5) | 33.9(± 0.4) | 4.25 | 3.75 | 4.0(±0.4) | 4.0 |
Also shown is the position of significant increase value predicted by the model of Fig. 1B, in which larger scleral fibrils are assumed to reinforce the peripheral oblique cornea. Note that the model predicts lower POSI values for scans 1 and 2 compared to 3 and 4, consistent with the current data.