To investigate the potential association between gut microbiota and central serous chorioretinopathy (CSC), clinical observations have indicated that patients with CSC frequently present with chronic gastrointestinal symptoms. This observation has led to the hypothesis that CSC may be associated with gut dysbiosis. The genus Bifidobacterium is widely recognized as a beneficial component of the gut microbiota, and multiple well-established Bifidobacterium supplements are commercially available. To explore this potential association, fecal samples will be collected from both CSC patients and healthy controls. Whole-metagenome shotgun sequencing will be performed to compare gut microbial compositions between the two groups and to determine whether significant differences exist. In addition, CSC patients will be randomly assigned to two groups. One group will receive Bifidobacterium supplementation for a minimum of one month, while the other group will receive a placebo. Clinical outcomes will then be evaluated to assess whether Bifidobacterium supplementation is associated with faster recovery and reduced relapse rates compared with placebo.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
DOUBLE
Enrollment
400
the Bifidobacterium genus supplement
Placebo
2 nd Affiliated Hospital, School of Medicine, Zhejiang University, China
Hanzhou, Zhejiang, China
RECRUITINGBest Corrected Visual Acuity
BCVA is commonly assessed during eye exams to determine the effectiveness of vision correction and to evaluate the impact of eye conditions or diseases on vision.
Time frame: through study completion, an average of one year
Central Retinal Thickness (CRT)
Central Retinal Thickness is typically assessed using imaging techniques such as optical coherence tomography (OCT), which provides detailed cross-sectional images of the retina, allowing for accurate measurement of its thickness.
Time frame: through study completion, an average of one year
the thickness of Subretinal Fluid (SRF)
Subretinal fluid can cause vision distortion and may require medical intervention to address the underlying condition and reduce fluid accumulation.
Time frame: through study completion, an average of one year
the thickness of Choroid
Choroidal hyperpermeability is one of the key mechanisms underlying the pathogenesis of central serous chorioretinopathy (CSC).
Time frame: through study completion, an average of one year
Choroidal Vascular Index (CVI)
This is a ratio or index that quantifies the proportion of the choroid occupied by blood vessels compared to the total choroidal area. It provides a measure of the relative density of the choroidal vasculature.
Time frame: through study completion, an average of one year
Choroidal Vascular Volume (CVV)
This measures the total volume of the choroidal blood vessels within a specific area of the choroid. It reflects the overall blood vessel density and the amount of blood flowing through the choroidal vasculature.
Time frame: through study completion, an average of one year
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