Table 1.
Characteristics of the study sample (n = 734 participants). OD: right eyes, OS: left eyes; myopic, emmetropic, and hyperopic eyes classified according to spherical equivalent measurements.
| Mean | Standard deviation | Minimum | Maximum | |
|---|---|---|---|---|
| Age (years) | 40.4 | 11.2 | 17 | 64 |
| Body mass index (kg/m2) | 22.9 | 4.0 | 15.2 | 49.3 |
| Mean arterial pressure (mmHg) | 98 | 11 | 70 | 148 |
| HbA1c (%) | 5.62 | 0.40 | 4.60 | 9.60 |
| High density lipoproteins (mg/dL) | 59 | 13 | 28 | 113 |
| Low density lipoproteins (mg/dL) | 126 | 32 | 54 | 258 |
| Triglycerides (mg/dL) | 126 | 78 | 30 | 741 |
| Manifest refraction (diopters): | ||||
| Sphere OD | −1.61 | 2.70 | −9.75 | 6.50 |
| Cylinder OD | −0.68 | 0.74 | −6.00 | 0.00 |
| Sphere OS | −1.59 | 2.82 | −11.00 | 8.50 |
| Cylinder OS | −0.73 | 0.81 | −6.25 | 0.00 |
| Tonometry (mmHg): | ||||
| OD | 16.01 | 3.23 | 9 | 26 |
| OS | 16.21 | 3.22 | 9 | 26 |
| Central corneal thickness (μm) | ||||
| OD | 560.1 | 31.9 | 468 | 672 |
| OS | 562.2 | 32.9 | 463 | 660 |
| Anterior corneal curvature (mean radius in mm) | ||||
| OD | 7.43 | 0.26 | 6.68 | 8.31 |
| OS | 7.43 | 0.28 | 6.58 | 8.38 |
|
| ||||
| Manifest refraction: grouped | Frequency | Percentage | ||
|
| ||||
| Right eyes: | ||||
| Myopic eyes (<−0.5 D) | n = 430 | 59% | ||
| Emmetropic eyes | n = 232 | 32% | ||
| Hyperopic eyes (>0.5 D) | n = 68 | 9% | ||
| Left eyes: | ||||
| Myopic eyes (<−0.5 D) | n = 441 | 60% | ||
| Emmetropic eyes | n = 218 | 30% | ||
| Hyperopic eyes (>0.5 D) | n = 71 | 10% | ||