Table 2.
Patients characteristics and risk factors
| Variable | Category | PIS | P | |
|---|---|---|---|---|
|
| ||||
| Yes, n (%) | No, n (%) | |||
| Age | ≤60 | 13 (41.9) | 22 (48.9) | 0.550 |
| >60 | 18 (58.1) | 23 (51.10) | ||
| Gender | Male | 8 (25) | 16 (35.6) | 0.324 |
| Female | 24 (75) | 29 (64.4) | ||
| Residency | Urban | 27 (84.4) | 31 (68.9) | 0.120 |
| Rural | 5 (15.6) | 14 (31.1) | ||
| Glaucoma | PACG | 26 (81.3) | 31 (68.9) | 0.223 |
| PAC | 6 (18.8) | 14 (31.1) | ||
| Laterality | Unilateral | 2 (6.3) | 7 (15.6) | 0.210 |
| Bilateral | 30 (93.8) | 38 (84.4) | ||
| Family history | Yes | 1 (3.1) | 5 (11.1) | 0.198 |
| No | 31 (96.9) | 40 (88.9) | ||
| AF | Yes | 1 (3.1) | 0 | 0.233 |
| No | 31 (96.9) | 45 (100) | ||
| Asthma | Yes | 1 (3.1) | 3 (6.7) | 0.490 |
| No | 31 (96.9) | 42 (93.3) | ||
| DM | Yes | 20 (62.5) | 23 (51.1) | 0.321 |
| No | 12 (37.5) | 22 (48.9) | ||
| HTN | Yes | 20 (62.5) | 21 (46.7) | 0.170 |
| No | 12 (37.5) | 24 (53.3) | ||
| Hypothyroidism | Yes | 0 | 2 (4.4) | 0.227 |
| No | 32 (100) | 43 (95.6) | ||
| Smoking | Yes | 1 (3.1) | 0 | 0.233 |
| No | 31 (96.9) | 45 (100) | ||
| Preintervention IOP (mmHg) | ≤20 | 26 (83.9) | 27 (90) | 0.478 |
| >20 | 5 (16.1) | 3 (10) | ||
| Preintervention VA | ≤20/40 | 15 (88.2) | 17 (85) | 0.774 |
| >20/40 | 2 (11.8) | 3 (15) | ||
| Visual field | Normal | 8 (34.8) | 12 (41.4) | 0.627 |
| Abnormal | 15 (65.2) | 17 (58.6) | ||
| CDR | <0.5 | 22 (71) | 22 (73.3) | 0.837 |
| ≥0.5 | 9 (29) | 8 (26.7) | ||
| Gonioscopy (angle) | Open | 6 (20.7) | 9 (36) | 0.210 |
| Closed | 23 (79.3) | 16 (64) | ||
| AC depth | Shallow | 5 (16.1) | 11 (39.3) | 0.046* |
| Deep | 26 (83.9) | 17 (60.7) | ||
* Significant P value ≤ 0.05, AF: Atrial fibrillation, DM: Diabetes mellitus, IOP: Intraocular pressure, VA: Visual acuity, CDR: Cup-to-disc ratio, AC: Anterior chamber, PIS: Plateau iris syndrome, HTN: Hypertension, PAC: Primary angle closure, PACG: PAC glaucoma