Clinical Study

Clinical Outcomes of Peripheral Iridotomy in Patients with the Spectrum of Chronic Primary Angle Closure

Table 1

Baseline ocular characteristics.

Variables All eyes
( )
CPAC spectrum disease
PACS
( )
CPAC
( )
CPACG
( )

Best corrected visual acuity

10× logMAR, mean SD0.9 ± 1.10.7 ± 1.11.2 ± 1.10.9 ± 1.2
20/25 or better, (%)55 (69.7)19 (76.0)18 (60.0)18 (75.0)

Cataract grade

0, (%)9 (11.4)4 (16.0)5 (16.7)0 (0.0)
1, (%)39 (49.4)16 (64.0)10 (33.3)13 (54.2)
2, (%)21 (26.6)4 (16.0)10 (33.3)7 (29.2)
3, (%)10 (12.7)1 (4.0)5 (16.7)4 (16.7)

IOP

IOP with or without medical treatment (mm Hg), mean SD20.0 ± 6.016.0 ± 3.022.0 ± 5.721.6 ± 6.7
Number of IOP-lowering medications
 0, ( , %)43 (54.4)25 (100.0)12 (40.0)6 (25.0)
 1, ( , %)20 (25.3)0 (0.0)13 (43.3)7 (29.2)
 2, ( , %)9 (11.4)0 (0.0)5 (16.7)4 (16.7)
 3, ( , %)7 (8.9)0 (0.0)0 (0.0)7 (29.2)
 Mean ± SD0.75 ± 0.980.0 ± 0.00.8 ± 0.71.5 ± 1.2

Gonioscopy examination

Degrees of angle depth
 0, (%)9 (11.4)0 (0.0)5 (16.7)4 (16.7)
 10, (%)18 (22.8)8 (32.0)5 (16.7)6 (25.0)
 20, (%)50 (63.3)17 (68.0)18 (60.0)14 (58.2)
 30, (%)2 (2.5)0 (0.0)2 (6.7)0 (0.0)
PAS, (%)10 (12.7)0 (0.0)5 (16.7)5 (20.8)

PAS: peripheral anterior synechiae; IOP: intraocular pressure; CPAC: chronic primary angle closure; PACS: primary angle closure suspect; CPACG: chronic primary angle closure glaucoma.