Table 4. Correlation among diabetes duration, HbA1c value, RNFL thickness, and GC-IPL thickness in diabetic patients.
| Diabetes duration | HbA1c value | |
|---|---|---|
| RNFL thickness (μm) | ||
| Average | ||
| Pearson Correlation | −0.152 | 0.162 |
| P-value | 0.072 | 0.048 |
| S | ||
| Pearson Correlation | −0.134 | 0.152 |
| P-value | 0.114 | 0.065 |
| N | ||
| Pearson Correlation | −0.017 | −0.024 |
| P-value | 0.841 | 0.774 |
| I | ||
| Pearson Correlation | −0.086 | 0.162 |
| P-value | 0.309 | 0.048 |
| T | ||
| Pearson Correlation | −0.164 | 0.101 |
| P-value | 0.052 | 0.222 |
| GC-IPL thickness (μm) | ||
| Average | ||
| Pearson Correlation | −0.137 | 0.081 |
| P-value | 0.106 | 0.329 |
| SN | ||
| Pearson Correlation | −0.146 | 0.055 |
| P-value | 0.083 | 0.509 |
| S | ||
| Pearson Correlation | −0.145 | 0.074 |
| P-value | 0.086 | 0.371 |
| ST | ||
| Pearson Correlation | −0.178 | 0.067 |
| P-value | 0.035 | 0.421 |
| IN | ||
| Pearson Correlation | −0.057 | 0.099 |
| P-value | 0.503 | 0.228 |
| I | ||
| Pearson Correlation | −0.088 | 0.071 |
| P-value | 0.299 | 0.391 |
| IT | ||
| Pearson Correlation | −0.121 | 0.051 |
| P-value | 0.152 | 0.536 |
Abbreviations: GC-IPL, ganglion cell-inner plexiform layer; I, inferior; IN, infero-nasal; IT, infero-temporal; N, nasal; RNFL, retinal nerve fiber layer; S, superior; SN, supero-nasal; ST, supero-temporal; T, temporal. Statistical significant P-values are written in bold.