Table 3.
OPL and ONL thickness analysis of diabetic eyes compared with control group.
| Subfield Analyzed | Diabetic Eyes (n = 34) | Control Eyes (n = 32) | |
|---|---|---|---|
| Mean ± SD | Mean ± SD | p Value * | |
| OPL thickness (µm) | |||
| 1-mm central circle | 26.8 ± 4.9 | 25.9 ± 4.3 | 0.475 |
| 3-mm S subfield | 38.0 ± 8.8 | 35.0 ± 9.9 | 0.179 |
| 6-mm S subfield | 27.9 ± 2.8 | 26.0 ± 3.1 | 0.015 |
| 3-mm I subfield | 31.5 ± 4.0 | 30.7 ± 6.5 | 0.599 |
| 6-mm I subfield | 26.5 ± 1.7 | 24.9 ± 1.8 | 0.001 |
| 3-mm N subfield | 32.8 ± 7.7 | 30.3 ± 4.7 | 0.133 |
| 6-mm N subfield | 28.4 ± 2.9 | 26.4 ± 2.7 | 0.007 |
| 3-mm T subfield | 33.8 ± 5.8 | 34.4 ± 7.0 | 0.713 |
| 6-mm T subfield | 27.9 ± 2.1 | 26.9 ± 3.1 | 0.132 |
| ONL thickness (µm) | |||
| 1-mm central circle | 91.5 ± 9.3 | 88.7 ± 11.1 | 0.274 |
| 3-mm S subfield | 67.8 ± 11.2 | 65.7 ± 12.0 | 0.474 |
| 6-mm S subfield | 63.4 ± 7.4 | 61.2 ± 8.1 | 0.242 |
| 3-mm I subfield | 72.7 ± 7.8 | 69.2 ± 9.0 | 0.100 |
| 6-mm I subfield | 58.1 ± 7.4 | 55.4 ± 7.3 | 0.147 |
| 3-mm N subfield | 75.1 ± 11.4 | 74.5 ± 11.2 | 0.834 |
| 6-mm N subfield | 61.1 ± 7.5 | 59.5 ± 8.9 | 0.438 |
| 3-mm T subfield | 71.5 ± 10.5 | 66.6 ± 10.3 | 0.061 |
| 6-mm T subfield | 61.4 ± 7.9 | 56.8 ± 7.1 | 0.017 |
OPL: outer plexiform layer; ONL: outer nuclear layer; n: number; SD: standard deviation; S: superior; I: inferior; N: nasal; T: temporal; G: central. *: Student’s t test for independent samples.