Table 3. Comparison of chorioretinal thicknesses of Rhesus macaque eye measured by Spectral Domain OCT Imaging (SD-OCT) pre- and post- ETS exposure.
| Retinal layers | Pre-exposure (um) | Post-exposure (um) | P value |
|---|---|---|---|
| Nerve fiber layer (NFL) |
17.36±0.86 |
16.01±0.47 |
0.17 |
| Ganglion cell layer (GCL) |
23.60±1.54 |
24.35±1.81 |
0.6 |
| Inner plexiform layer (IPL) |
34.32±1.59 |
33.75±1.29 |
0.77 |
| Inner nuclear layer (INL) |
29.95±1.59 |
30.58±1.34 |
0.37 |
| Outer plexiform layer (OPL) |
22.20±0.88 |
22.26±0.74 |
0.95 |
| Outer nuclear layer (ONL) |
85.30±2.59 |
85.31±2.94 |
0.98 |
| Photoreceptor inner segments (IS) |
23.66±1.03 |
23.20±0.85 |
0.68 |
| Photoreceptor outer segments (OS) |
45.12±1.85 |
44.60±1.33 |
0.73 |
| Retinal pigment epithelium (RPE) |
24.14±1.38 |
25.23±1.71 |
0.49 |
| Choriocapillaris (CC) |
18.60±2.05 |
19.46±2.24 |
0.34 |
| Choroid (C) |
179.57±8.27 |
177.44±13.90 |
0.89 |
| All layers | 305.64±6.74 | 305.28±6.98 | 0.82 |
The differences have not reached statistical significance at p<0.05, although NFL layer (p<0.17) showed the most substantial change in Pre/Post-exposure thickness.