The Relationship between Visual-Evoked Potential and Optic Coherence Tomography and Clinical Findings in Parkinson Patients
Table 3
OCT and VEP measurements between PD and control groups.
OCT and VEP localization
PD group
Control group
-value
Right FT fovea
262 (219–319)
265 (229–327)
0.627
Right FT parafovea temporal
307 (248–356)
312 (257–355)
0.681
Right FT parafovea superior
317 (280–355)
319 (290–362)
0.960
Right FT parafovea nasal
320 (261–358)
319 (279–368)
0.837
Right FT parafovea inferior
314 (237–380)
314 (259–363)
0.876
Right FT perifovea temporal
289 (244–326)
283 (235–320)
0.559
Right FT perifovea superior
288 (262–320)
288 (258–312)
0.605
Right FT perifovea nasal
303 (266–345)
310 (274–344)
0.462
Right FT perifovea inferior
285 (249–342)
291 (233–309)
0.921
Right MV fovea
0.205 (0.172–0.251)
0.208 (0.180–0.257)
0.636
Right MV parafovea temporal
0.483 (0.389–0.558)
0.491 (0.403–0.557)
0.736
Right MV parafovea superior
0.501 (0.439–0.989)
0.501 (0.455–0.568)
0.857
Right MV parafovea nasal
0.503 (0.409–0.563)
0.501 (0.439–0.578)
0.837
Right MV parafovea inferior
0.494 (0.372–0.597)
0.494 (0.407–0.570)
0.866
Right MV perifovea temporal
0.906 (0.766–1.02)
0.890 (0.739–1.005)
0.580
Right MV perifovea superior
0.906 (0.824–1.814)
0.904 (0.812–0.995)
0.736
Right MV perifovea nasal
0.952 (0.835–1.083)
0.975 (0.860–1.082)
0.470
Right MV perifovea inferior
0.894 (0.783–1.073)
0.915 (0.732–0.970)
0.926
Right RNFL temporal
81 (58–111)
90 (63–142)
0.107
Right RNFL superior
133 (101–171)
127 (104–257)
0.499
Right RNFL nasal
70 (55–95)
80 (60–90)
0.119
Right RNFL inferior
134 (102–157)
135 (111–172)
0.686
Right GCC superior
96.57 ± 10.16
98.57 ± 7.45
0.384
Right GCC inferior
97.28 ± 10.11
99.92 ± 7.88
0.259
Right VEP amplitude
5.35 ± 2.09
5.47 ± 1.82
0.831
Right P100 latency
109.23 ± 6.92
108.37 ± 12.63
0.732
Right N75 latency
82.97 ± 11.48
81.12 ± 13.23
0.575
Right N135 latency
141.99 ± 9.65
143.87 ± 12.06
Left FT fovea
259 (208–318)
263 (230–299)
0.600
Left FT parafovea temporal
311 (276–333)
312 (274–354)
0.943
Left FT parafovea superior
318 (235–352)
328 (276–359)
0.109
Left FT parafovea nasal
317 (223–353)
330 (297–366)
0.250
Left FT parafovea inferior
313 (236–339)
322 (283–359)
0.152
Left FT perifovea temporal
286 (244–308)
286 (270–313)
0.527
Left FT perifovea superior
286 (238–420)
296 (229–324)
0.340
Left FT perifovea nasal
306 (216–345)
309 (279–336)
0.128
Left FT perifovea inferior
285 (245–307)
292 (259–312)
0.539
Left MV fovea
0.203 (0.164–0.250)
0.206 (0.181–0.235)
0.579
Left MV parafovea temporal
0.439 (0.434–0.523)
0.490 (0.431–0.556)
0.929
Left MV parafovea superior
0.502 (0.369–0.946)
0.515 (0.434–0.563)
0.299
Left MV parafovea nasal
0.498 (0.350–0.554)
0.519 (0.467–0.574)
0.262
Left MV parafovea inferior
0.492 (0.371–0.532)
0.506 (0.444–0.565)
0.158
Left MV perifovea temporal
0.898 (0.767–0.968)
0.915 (0.807–0.984)
0.813
Left MV perifovea superior
0.900 (0.748–1.785)
0.931 (0.719–1.019)
0.493
Left MV perifovea nasal
0.963 (0.677–1.083)
0.971 (0.877–1.055)
0.140
Left MV perifovea inferior
0.896 (0.770–0.965)
0.917 (0.813–0.980)
0.535
Left RNFL temporal
81 (49–109)
81 (61–100)
0.939
Left RNFL superior
135 (99–183)
139 (102–182)
0.800
Left RNFL nasal
76 (52–103)
78 (60–118)
0.766
Left RNFL inferior
134 (98–184)
145 (121–155)
0.265
Left GCC superior
98.01 ± 10.27
99.95 ± 8.27
0.409
Left GCC inferior
99.13 ± 9.76
101.12 ± 7.23
0.361
Left VEP amplitude
5.19 ± 2.07
5.74 ± 2.15
0.330
Left P100 latency
109.30 ± 8.55
108.80 ± 10.51
0.843
Left N75 latency
82.67 ± 10.63
80.32 ± 12.52
0.442
Left N135 latency
145.15 ± 11.94
144.99 ± 13.72
0.960
MV: macular volume; FT: foveal thickness; RNFL: retinal nerve fiber layer; GCC: ganglion cell complex; VEP: visual evoked potentials. VEP latencies are given in milliseconds (ms) and amplitudes in microvolts (μV). Variables distributed normally were expressed as mean ± standart deviation; variables distributed non-normally were expressed as median (minimum-maximum).
