Clinical Outcomes of Peripheral Iridotomy in Patients with the Spectrum of Chronic Primary Angle Closure
Table 3
Summary of secondary outcomes.
Outcome variable
All Eyes ()
PACS ()
CPAC ()
CPACG ()
Gonioscopy examination after PI, (%)
Angle deepened by
0 degrees
26 (32.9)
8 (32.0)
8 (26.7)
10 (41.7)
10 degrees
39 (49.4)
13 (52.0)
16 (53.3)
10 (41.7)
20+ degrees
14 (17.8)
4 (16.7)
6 (20.0)
4 (16.7)
Number of eyes with gonioscopy examination before or at 1-month visit
69 (87.3)
5 (20.0)
4 (13.3)
1 (4.2)
IOP change from baseline to last visit*
Time between baseline and last IOP measurement (months), mean ± SD
34.1 ± 24.6
39.5 ± 19.4
38.1 ± 28.3
23.4 ± 22.2
IOP change (mm Hg), mean ± SD
−1.9 ± 6.8
0 ± 4.0
−2.8 ± 7.2
−2.6 ± 8.3
Number of eyes with change in IOP-lowering medications, (%)
Less medications
11 (13.9)
0 (0.0)
5 (16.7)
6 (25.0)
No change
43 (54.4)
19 (76.0)
14 (46.7)
10 (41.7)
More medications
25 (31.6)
6 (24.0)
8 (36.7)
8 (33.3)
Cataract grade change from baseline to last visit¥, (%)
No change
29 (36.7)
8 (32.0)
12 (40.0)
9 (37.5)
Increased by 1
38 (48.1)
14 (56.0)
15 (50.0)
9 (37.5)
Increased by 2
12 (15.2)
3 (12.0)
3 (10.0)
6 (25.0)
BCVA change from baseline to last visit¥
Time between baseline and last BCVA measurement (months), mean ± SD Number of eyes with BCVA Change, (%)#
41.4 ± 26.9
39.5 ± 19.4
43.4 ± 31.3
40.9 ± 28.7
Loss of 2 or more lines
23 (29.5)
7 (29.2)
7 (23.3)
9 (37.5)
Change within 2 lines
52 (66.7)
16 (66.7)
22 (73.3)
14 (58.3)
Gain 2 or more lines
3 (3.8)
1 (4.2)
1 (3.3)
1 (4.2)
LE: lens extraction; GS: glaucoma surgery; PACS: primary angle closure suspect; CPAC: chronic primary angle closure; CPACG: chronic primary angle closure glaucoma; BCVA: best corrected visual acuity.
*Last followup visit or the last visit before LE or GS. ¥Last followup visit or last visit before LE. Missing one PACS eye.
