Results
TIA, TIAs
DILATION, TIA, INTRAOCULAR PRESSURE
The 32 patients (64 eyes) enrolled in this study included 2 men and 30 women with an average age of 61.80 ± 9.79 (range, 42–77) years. The time of the last follow-up ranged from 6 months to 2 years. Each of the four study groups comprised 8 patients (16 eyes). The baseline values of pupil diameter and anterior chamber volume significantly differed among the four groups (
Patient characteristicsAOD: anterior opening distance; BCVA: best-corrected visual acuity; IOP: intraocular pressure; TIA: trabecular iris angle; HEFP: high energy, far from the periphery; HENP: high energy, near the periphery; LEFP: low energy, far from the periphery; LENP: low energy, near the peripheryBCVA, IOP, pupil diameter, central anterior chamber depth, anterior chamber volume, AOD500, AOD750, TIA500, and TIA750 of all enrolled patients before and after surgery were compared. The IOP after surgery was significantly lower than that before (t = 3.297, 
Comparison of therapeutic effects before and after surgeryAOD: anterior opening distance; BCVA: best-corrected visual acuity; IOP: intraocular pressure; TIA: trabecular iris angle
Comparison of the IOP before and after treatment
Comparison of the anterior chamber volume before and after treatment
Comparison of the anterior opening distance (AOD) before and after treatment
Comparison of the trabecular iris angles (TIAs) before and after treatmentThe parameters before and after surgery were also compared within each group. The BCVA of group LEFP was significantly improved after surgery, whereas no significant differences before and after surgery were found in any of the other groups. The IOP values of HEFP and HENP were significantly decreased after surgery compared to those before surgery (both 
Comparison of therapeutic effects among groupsAOD: anterior opening distance; BCVA: best-corrected visual acuity; IOP: intraocular pressure; TIA: trabecular iris angle;HEFP: high energy, far from the periphery; HENP: high energy, near the periphery; LEFP: low energy, far from the periphery; LENP: low energy, near the peripheryAt each time point, no statistically significant difference in IOP, pupil diameter, central anterior chamber depth, anterior chamber volume, AOD500, AOD750, TIA500, and TIA750 was found among the four study groups. However, when comparing two groups, HEFP had a significantly stronger pupil dilation effect than LENP (
Changes in parameters after treatmentAOD: anterior opening distance; IOP: intraocular pressure; TIA: trabecular iris angle;HEFP: high energy, far from the periphery; HENP: high energy, near the periphery; LEFP: low energy, far from the periphery; LENP: low energy, near the periphery
Changes in trabecular iris angle (TIA) among groups after treatment
Changes in anterior opening distance (AOD) among groups after treatment