Subscale and summary score | Median score (range) | Cronbach’s alpha | ||
---|---|---|---|---|
Frequency | Degree | Frequency | Degree | |
Bothersome Ocular Symptoms subscale | 2.0 (0–6) | 4.0 (0–19) | 0.80 | 0.70 |
Impact on Daily Life subscale | 3.0 (0–9) | 2.0 (0–9) | 0.89 | 0.89 |
Summary score | 5.0 (0–13) | 7.0 (0–28) | 0.90 | 0.89 |