Disease Description (Causes and Symptoms)
- Disease name: Central Serous Chorioretinopathy (CSC)
- Definition and pathophysiology: Increased vascular permeability of the choroid causes serous fluid to accumulate beneath the retinal pigment epithelium (RPE), resulting in partial retinal detachment in the macula (central retina). Choroidal hyperperfusion and hyperpermeability, along with localized defects in the RPE, are known to be the main mechanisms.
- Main causes/triggering factors: Although the exact cause is unknown, the risk of occurrence increases in association with stress and overwork, excessive alcohol consumption, hypertension, use of systemic steroids (including oral, injectable, and topical forms), and pregnancy.
- Main symptoms: Central scotoma (darkness in the central visual field), reduced central visual acuity (ranging from mild to severe), micropsia (objects appearing smaller), metamorphopsia (objects appearing bent or distorted), and blurred or distorted vision. The severity of symptoms varies depending on the amount and extent of fluid beneath the retina.
Treatment Methods
- Initial management (observation): In first-onset cases, the standard approach is to observe for spontaneous improvement for approximately 3–4 months (which may vary depending on symptoms and examination findings). In recurrent cases, a shorter observation period (e.g., 1 month) may be considered.
- Medication:
- Steroid discontinuation: If possible, discuss with a doctor whether to discontinue or replace systemic or topical steroids. Steroids are aggravating factors.
- Mineralocorticoid receptor antagonists (e.g., eplerenone, spironolactone): These have been used in some studies, but evidence is limited, and they may be administered as non-covered, off-label treatment at the discretion of a specialist.
- Anti-VEGF agents: These may be used when choroidal neovascularization (CNV) is present (they are not the standard first-line treatment for typical CSC).
- Procedures/laser:
- Focal laser photocoagulation: May be selectively used when the leakage point does not directly involve the center of the retina. Its application is limited for leakage in locations where it could cause central vision loss.
- Photodynamic therapy (PDT, using verteporfin): A treatment recognized as effective for CSC that does not respond to treatment or is chronic or recurrent; low-fluence PDT is commonly used. A reduction in choroidal permeability and improvement in symptoms can be expected after the procedure.
- Lifestyle management and supportive measures:
- Stress management, adequate sleep, limiting alcohol, avoiding smoking, and blood pressure management, among others.
- Considerations when selecting treatment: The decision is made comprehensively based on the duration of symptoms (whether the condition has become chronic), location (whether the central macula is involved), degree of vision loss, and the patient’s occupation (driving and precision work), among other factors.
Checklist Before an Outpatient Visit (Including Items to Bring and Example Questions)
- Items to bring/submit:
- List of medications currently being taken (especially including steroids), along with dosage and duration of use
- Previous ophthalmic examination records (copies of recent OCT, fluorescein angiography (FA), and indocyanine green angiography (ICGA) results, if available)
- Record of when symptoms began and how they have changed (changes in vision by date, factors that worsened or improved symptoms)
- Lifestyle information (stress level, sleep pattern, alcohol and smoking status, pregnancy status)
- Examples of questions to prepare for the outpatient visit:
- Writing down the exact date when symptoms began can help with diagnosis and assessment of the course.
- It is useful to record whether there have been changes in the central visual field using an Amsler grid before the visit.
Examples of General Questions to Ask the Doctor
- How likely is this condition to recover spontaneously? How long does recovery usually take?
- In my case, is immediate treatment (laser/PDT/medication) necessary, or is observation alone sufficient?
- What are the effects and side effects of the treatments you recommend? (PDT, laser, mineralocorticoid receptor antagonists, etc.)
- What should I do if I am taking steroids? (Possibility of discontinuation or replacement)
- How likely is recurrence, and what will the plan be if it recurs?
- What degree of vision recovery and long-term prognosis can be expected? (Including the risk of permanent damage)
Examples of Disease-Specific Questions
- Based on my retinal OCT and fluorescein angiography results, does the location of the leakage directly affect the center of the macula (the area densely populated with photoreceptors)? Therefore, is it in a location where focal laser treatment is possible?
- Findings suggest a chronic lesion (12 months or longer). Why do you recommend PDT or another active treatment, and what degree of benefit can be expected? Also, how high is the risk of long-term complications (e.g., RPE atrophy and choroidal neovascularization)?
Additional information: The prognosis is generally relatively favorable, and many patients improve within several months. However, recurrence has been reported in approximately 30–50% of cases, and when the condition becomes chronic (especially for 12 months or longer), retinal pigment epithelium atrophy, permanent vision loss, and choroidal neovascularization may occur. Therefore, regular monitoring and active treatment when necessary are important. Department: Ophthalmology.