Table 1.
Baseline characteristics of study participants
| Laughter exercise group (n=149) | 0.1% hyaluronic acid group (n=150) | |
|---|---|---|
| Age (years), mean (SD) | 28.9 (6.33) | 28.9 (6.29) |
| Female sex, No. (%) | 60 (73) | 62 (75) |
| Male sex, No. (%) | 40 (27) | 38 (25) |
| Education of >12 years, No. (%) | 139 (93) | 144 (96) |
| BCVA ≥0.8, No. (%) | 148 (99) | 148 (99) |
| SER for right eye (diopter), median (IQR) | −3.38 (−5.50 to −1.50) | −3.25 (−5.00 to −1.00) |
| OSDI grade at baseline, No. (%): | ||
| ≥18 to <23 | 27 (18) | 27 (18) |
| ≥23 to <33 | 47 (32) | 48 (32) |
| ≥33 to <80 | 75 (50) | 75 (50) |
BCVA=best corrected visual acuity; IQR=interquartile range; OSDI=Ocular surface disease index; SD=standard deviation; SER=spherical equivalent refraction.