Demographic characteristics of study patients
| Group | n | Gender | Mean±SD age (years) | Age range (years) |
|---|---|---|---|---|
| Diabetic dry eye | 19 | 10 women, 9 men | 65.40±9.0 | 48–69 |
| Non-diabetic dry eye | 15 | 6 women, 8 men | 68.90±9.64 | 51–82 |
| Diabetic without dry eye | 14 | 8 women, 6 men | 67.90±7.36 | 55–76 |