What Is Central Serous Retinopathy (CSR)?

 


Introduction

Central Serous Retinopathy (CSR), also known as Central Serous Chorioretinopathy (CSC), is an eye condition where fluid accumulates under the retina, leading to distorted or blurred vision. It typically affects the macula, the central part of the retina responsible for sharp vision. CSR is most common in young to middle-aged adults and is often linked to stress and corticosteroid use.

Causes of Central Serous Retinopathy

  • Stress: High stress levels can trigger the release of cortisol, which may contribute to CSR.

  • Corticosteroids: Use of steroids (oral, nasal sprays, creams, or injections) is a significant risk factor.

  • Hormonal Imbalances: Elevated cortisol and adrenaline levels may impact retinal blood vessels.

  • Hypertension: High blood pressure can affect blood flow to the retina.

  • Sleep Disorders: Poor sleep quality, including sleep apnea, has been associated with CSR.

  • Genetic Factors: Some individuals may have a genetic predisposition to CSR.

Symptoms of Central Serous Retinopathy

  • Blurred or distorted central vision.

  • A dark or gray spot in the center of vision.

  • Straight lines appearing wavy (metamorphopsia).

  • Reduced contrast sensitivity and color perception.

  • Difficulty reading or focusing on details.

Diagnosis

  • Dilated Eye Exam: The retina is examined for fluid accumulation.

  • Optical Coherence Tomography (OCT): High-resolution imaging to detect retinal swelling and fluid leakage.

  • Fluorescein Angiography: A dye-based test to identify leakage in the retina.

  • Autofluorescence Imaging: Helps distinguish between active and chronic CSR.

Treatment Options

Observation

  • Many cases of CSR resolve on their own within 1–3 months without treatment.

  • Patients are advised to reduce stress and avoid corticosteroid use if possible.

Medications

  • Oral Medications: Drugs such as mineralocorticoid receptor antagonists (e.g., eplerenone, spironolactone) may help reduce fluid buildup.

  • Carbonic Anhydrase Inhibitors: These can aid in retinal fluid absorption.

Laser and Photodynamic Therapy (PDT)

  • Focal Laser Treatment: Targets specific leakage points in chronic cases.

  • Photodynamic Therapy (PDT): A low-intensity laser combined with a light-sensitive drug (verteporfin) to reduce fluid leakage.

Prognosis and Prevention

  • Most cases resolve without permanent vision loss, but recurrent CSR can cause long-term retinal damage.

  • Managing stress, controlling blood pressure, and avoiding steroids can help prevent recurrences.

  • Regular eye exams are essential for early detection and monitoring.

Conclusion

Central Serous Retinopathy is a retinal condition that can cause temporary or prolonged vision impairment. While many cases resolve naturally, chronic CSR may require medical intervention. If you experience sudden vision changes, consult an eye specialist for a comprehensive evaluation.