Morphologic Changes in the Foveal Photoreceptor Layer before and after Laser Treatment in Acute and Chronic Central Serous Chorioretinopathy Documented in Spectral-Domain Optical Coherence Tomography
Table 1
Computed descriptive statistical parameters for length of the photoreceptors (µm), retinal thickness (µm), and subretinal fluid (µm) in the examined eyes with symptomatic acute CSC versus chronic CSC—before treatment and 1 month and 12 months after laser treatment.
Before laser treatment
1 month after laser treatment
12 months after laser treatment
P
a
Mean
SD
Min.
Max.
Mean
SD
Min.
Max.
Mean
SD
Min.
Max.
Symptomatic Acute CSC
(1) Length of the photoreceptors (µm)
84.68
20.66
59
125
59.21
21.25
36
122
49.32
15.46
31
93
<0.0001
(2) Retinal thickness (µm)
218.00
48.21
147
303
208.16
41.23
134
270
228.74
15.36
201
248
0.0200
(3) Subretinal fluid in the centre of the fovea (µm)
221.58
101.46
71
434
8.21
16.62
0
60
0.00
0.00
0
0
<0.0001
Symptomatic Chronic CSC
(1) Length of the photoreceptors (µm)
82.50
23.09
26
123
56.81
18.41
20
90
42.88
8.85
20
55
<0.0001
(2) Retinal thickness (µm)
188.88
57.55
64
337
173.88
47.86
65
260
194.94
54.78
65
260
0.1300
(3) Subretinal fluid in the centre of the fovea (µm)
199.19
87.24
37
315
27.06
30.31
0
111
12.19
30.08
0
111
<0.0001
P
b
(1) 0.8554
(2) 0.0944
(3) 0.6911
(1) 0.9077
(2) 0.0446
(3) 0.0145
(1) 0.6067
(2) 0.0218
(3) 0.0520
P values provided for any intragroup comparison, considering changes over time (Friedman’s ANOVA was performed).
bP values provided for any between-group (unpaired) comparison (Wilcoxon rank-sum test was carried out).
