Loss of Visual Acuity after Successful Surgery for Macula-On Rhegmatogenous Retinal Detachment in a Prospective Multicentre Study
Table 2
Mean preoperative characteristics of the Retina 1 series included in the G1 group.
Whole series (Retina 1)
Macula-on group (G1)
value
(%)
(%)
95%CI
Previous PVR
No
522 (49.9%)
203 (56.9%)
51.7%; 62%
0.0095
A
247 (23.6%)
88 (24.7%)
20.2%; 29.1%
0.6823
B
278 (26.6%)
66 (18.5%)
14.5%; 22.5%
0.0007
Total
1047 (100%)
357 (100%)
Retinal break
Tear
739 (70.7%)
252 (70.6%)
65.9%; 75.3%
1
Hole
223 (21.3%)
74 (20.7%)
16.5%; 24.9%
0.8278
Dialysis
12 (1.2%)
7 (2%)
0.5%; 3.4%
0.2346
Giant tear
37 (3.5%)
14 (3.9%)
1.9%; 5.9%
0.805
Not visible
34 (3.3%)
10 (2.8%)
1.1%; 4.5%
0.7421
Total
1045 (100%)
357 (100%)
Type of break
Single
526 (52.1%)
196 (56.5%)
51.3%; 61.7%
0.1164
Multiple
432 (42.8%)
137 (39.5%)
34.3%; 44.6%
0.2306
Posterior rupture
17 (1.7%)
4 (1.2%)
0%; 2.3%
0.5786
Not visible
34 (3.4%)
10 (2.9%)
1.1%; 4.6%
0.7225
Total
1009 (100%)
357 (100%)
Size of breaks (clock hours)
Not visible
34 (3.3%)
10 (2.9%)
1.1%; 4.6%
0.7321
0-1
673 (65.4%)
235 (66.6%)
61.7%; 71.5%
0.684
2-3
265 (25.8%)
82 (23.2%)
18.8%; 27.6%
0.3067
3
57 (5.5%)
26 (7.4%)
4.6%; 10.1%
0.1667
Total
1029 (100%)
353 (100%)
Previous vitreous hemorrhage
No
908 (88%)
304 (85.9%)
82.3%; 89.5%
0.2561
Yes
124 (12%)
50 (14.1%)
10.5%; 17.8%
0.2561
Total
1032 (100%)
354 (100%)
Extension RD (quadrants)
0-1
188 (18.1%)
147 (41.4%)
36.3%; 46.5%
<0.0001
2-3
736 (70.8%)
208 (58.6%)
53.5%; 63.7%
<0.0001
4
116 (11.2%)
0 (0%)
0%; 1.3%
<0.0001
Total
1040 (100%)
355 (100%)
Macula
On
382 (36.7%)
357 (100%)
98.7%; 100%
<0.0001
Off
658 (63.3%)
0 (0%)
0%; 1.3%
<0.0001
Total
1040 (100%)
357 (100%)
Previous aphakic
No
664 (63.5%)
248 (69.7%)
64.9%; 74.4%
0.0179
Yes
382 (36.5%)
108 (30.3%)
25.6%; 35.1%
0.0179
Total
1046 (100%)
356 (100%)
PVD
Unknown
357 (34.1%)
113 (31.7%)
26.8%; 36.5%
0.3578
No
193 (18.4%)
80 (22.4%)
18.1%; 26.7%
0.0614
Yes
497 (47.5%)
164 (46%)
40.8%; 51.1%
0.5985
Total
1047 (100%)
357 (100%)
Myopia
No
346 (44.5%)
94 (33.7%)
28.1%; 39.2%
0.0003
5 Dp
206 (26.5%)
92 (33%)
27.5%; 38.5%
0.0174
5 Dp
225 (29%)
93 (33.3%)
27.8%; 38.9%
0.1225
Total
777 (100%)
279 (100%)
Preoperative VA
20/100
631 (61%)
44 (12.3%)
8.9%; 15.7%
<0.0001
20/100–20/40
142 (13.7%)
79 (22.1%)
17.8%; 26.4%
<0.0001
20/40
261 (25.2%)
234 (65.6%)
60.6%; 70.5%
<0.0001
Total
1034 (100%)
357 (100%)
(%): number and percentage of patients in Retina 1 Project and macula-on group (G1); G1: macula-on group; CI: confidence Interval; PVR: proliferative vitreoretinopathy; PVR grades A and B as defined by the Retina Society Classification in 1983; PVD: posterior vitreous detachment; RD: retinal detachment; VA: visual acuity, best corrected visual acuity.
