Table 2.
Ocular and Scan Characteristics of Study Eyes Grouped by DR Severity
| N = 396 Eyes | No DR | Mild NPDR | Moderate NPDR | Severe NPDR | PDR (no PRP) | PDR (with PRP) | |
|---|---|---|---|---|---|---|---|
| Scan Characteristics Mean ± SD Or N (%) | Eyes (%) | 64 (16.1) | 107 (26.9) | 84 (21.1) | 48 (12.1) | 40 (10.1) | 53 (13.4) |
| SSI, mean ± SD | 72.96 ± 7.70 | 71.65 ± 7.49 | 71.77 ± 8.62 | 71.43 ± 9.43 | 69.83 ± 7.66 | 69.24 ± 7.92 | |
| Quality Index | 7.82 ± 1.30 | 7.77 ± 1.05 | 7.52 ± 1.28 | 7.74 ± 1.18 | 7.68 ± 1.02 | 7.33 ± 1.94 | |
| Ocular Characteristics Mean ± SD Or N (%) | Central Subfield Thickness, µm | 276.95 ± 21.00 | 273.81 ± 26.35 | 270.48 ± 28.88 | 277.85 ± 33.29 | 274.25 ± 25.34 | 269.30 ± 45.31 |
| Spherical Equivalent | −1.18 ± 0.256 | −1.06 ± 0.20 | −0.74 ± 0.22 | −0.74 ± 0.30 | −1.72 ± 0.32 | −0.94 ± 0.28 | |
| Phakic | 58 (90.6) | 85 (79.4) | 70 (83.3) | 46 (95.8) | 37 (92.5) | 38 (71.7) | |
| Treatment History | anti-VEGF | n/a | 3 | 0 | 4 | 10 | 9 |
| PRP | n/a | n/a | n/a | 2 | 0 | 53 | |
| Focal laser | n/a | 1 | 1 | 3 | 1 | 3 | |
| PPV | n/a | 0 | 0 | 0 | 0 | 0 | |
DR, diabetic retinopathy; NPDR, non proliferative diabetic retinopathy; PDR, proliferative diabetic retinopathy; PPV, pars plana vitrectomy; PRP, panretinal photocoagulation; SSI, signal strength index; SD, standard deviation; n/a, not applicable.