Choroidal thickness in central serous chorioretinopathy.
OBJECTIVE
To study the choroidal thickness profile using high-penetration optical coherence tomography in central serous chorioretinopathy (CSC).


METHODS
Thirty-five eyes of 27 subjects with CSC and 35 healthy, age-matched control eyes were included. We observed the choroid using the prototype high-penetration optical coherence tomography. Fluorescein angiography and indocyanine green angiography were performed to identify the CSC location and activity. The choroidal thicknesses was measured manually in various conditions or locations, and the choroidal thickness maps were obtained from cube scans and calculating software and composed of nine sectors in the Early Diabetic Retinopathy Study chart.


RESULTS
The subfoveal choroidal thicknesses in all eyes with CSC were significantly (P < 0.01) greater than that in the control eyes. The choroidal thickness at the fovea and the fluorescein points of leakage were significantly (P < 0.01 for both comparisons) greater in eyes with CSC than the corresponding locations in the fellow eyes in patients with unilateral disease. Dilatation of the choroidal large vessels was significantly (P < 0.01) more common in CSC. The foveal choroidal thickness was significantly greater in eyes with venous dilatation (P < 0.01) than those without. The mean choroidal thickness was significantly (P < 0.05) greater in all sectors of the Early Diabetic Retinopathy Study chart except for the inner (P = 0.087) and outer (P = 0.053) inferior sectors. The percent mean choroidal thicknesses compared with the normal controls in the nasal sector were significantly (P < 0.05 and P < 0.01, respectively) greater in the inner and outer circles than in the superior, temporal, and inferior sectors.


CONCLUSIONS
The choroid is diffusely thickened in CSC likely because of the choroidal vascular dilatation. The nasal macula undergoes the greatest alterations in choroidal thickness compared with the other areas.
Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka, Japan.
Sato
S
Kuroda
Yasushi
Y
Ikuno
Yoshiaki
Y
Yasuno
Kei
K
Nakai
Shinichi
S
Usui
Miki
M
Sawa
Motokazu
M
Tsujikawa
Fumi
F
Gomi
Kohji
K
Nishida
D056833:Central Serous Chorioretinopathy / Q000150:complications* / Q000175:diagnosis; D002829:Choroid / Q000473:pathology*; D004396:Coloring Agents; D005260:Female; D005451:Fluorescein Angiography; D006801:Humans; D007208:Indocyanine Green; D007429:Intraocular Pressure / Q000502:physiology; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D041623:Tomography, Optical Coherence; D014792:Visual Acuity / Q000502:physiology
D004396:Coloring Agents; D007208:Indocyanine Green