Central Serous Chorioretinopathy (CSCR)

Central Serous Chorioretinopathy — usually shortened to CSCR or just “CSR” — is a condition where clear fluid collects under the central retina, lifting the macula off its normal seat. Vision becomes blurred, dimmer, slightly smaller and often distorted. CSCR is most common in working-age men under stress, particularly those who have recently taken steroids in any form.

What Happens Inside the Eye

The retina sits on a layer called the Retinal Pigment Epithelium (RPE), which acts as a pump — constantly removing fluid from beneath the retina. In CSCR, the choroid (the blood-vessel layer behind the retina) becomes congested and leaky, and small breaks in the RPE allow fluid to seep in. The result is a blister of clear fluid under the macula, which lifts the photoreceptors away from their normal nourishment.

Symptoms

• Sudden mild-to-moderate blur of central vision in one eye
• A central or paracentral grey/darker spot
• Objects look smaller (micropsia) or distorted
• Colours look slightly faded or yellower
• Difficulty reading or focusing on detailed work
• Vision often worse in the morning and slightly better through the day (as the body absorbs some fluid)
• Usually painless and one-eyed; the other eye can be affected later

Who Gets CSCR?

• Men aged 25–55 (about 4–6 times more common than in women)
• Type-A personality, high-stress occupations — the classic “stressed executive” pattern
• Recent steroid use in any form — oral, injection, inhaler, nasal spray, skin cream, or even some Ayurvedic / herbal preparations that secretly contain steroids
• Pregnancy (usually resolves after delivery)
• Cushing’s syndrome and other states of high cortisol
• Sleep disorders, obstructive sleep apnoea
• Helicobacter pylori infection (a weaker association)
• Family history in some cases

How We Diagnose CSCR

• Dilated retinal examination — the macula appears subtly elevated with a dome of clear fluid
• OCT — the cornerstone test. Shows the subretinal fluid pocket and the thickened (pachy-) choroid
• Fundus autofluorescence (FAF) — shows the trail of past leaks and damaged RPE in chronic cases
• Fluorescein angiography — classically shows a “smokestack” or “inkblot” leak point
• ICG Angiography — shows choroidal vessel dilation and helps rule out polypoidal disease (PCV)
• OCT-Angiography — checks for any new vessels in long-standing cases

Types of CSCR

• Acute CSCR — first or single episode lasting weeks to a few months. Most cases resolve spontaneously.
• Recurrent CSCR — episodes recur in the same or the other eye.
• Chronic CSCR — fluid persists beyond 4–6 months, with widespread RPE changes. Vision recovery is harder.
• Bullous / atypical CSCR — rare severe forms, often associated with strong steroid exposure.

Treatment Options

• Stop the trigger first — identify and remove any source of steroid. Treat stress, sleep apnoea and Helicobacter where relevant.
• Observation or focal laser — for first-episode acute CSCR, with monthly OCT monitoring. About 80% of cases resolve in 3–4 months on their own — but allowing fluid to sit on the macula for many months can cause permanent foveal changes. At Suraj Eye Institute, when fluorescein angiography shows a clearly identified extrafoveal leak point, we prefer to seal the leak with a focal laser rather than wait.
• Lifestyle measures — adequate sleep, stress reduction, breathing or meditation practice, regular exercise.
• Photodynamic Therapy (PDT) — reduced-fluence “safety” PDT is currently the most effective treatment for persistent or chronic CSCR.
• Micropulse / subthreshold laser — a gentler laser used for chronic CSCR when PDT is not available or appropriate.
• Oral medication in selected cases — mineralocorticoid receptor antagonists (eplerenone, spironolactone) are used in some patients.
• Anti-VEGF injections — only if secondary new vessels (CNV) develop in chronic cases.

What to Expect from Treatment

• Acute CSCR has an excellent prognosis: vision usually returns close to baseline.
• Some patients are left with a mild residual change in colour vision or contrast.
• Chronic / recurrent CSCR may leave permanent macular changes — treatment is aimed at preventing further damage.
• About 30–50% of patients have a recurrence at some point. Long-term lifestyle changes reduce this risk.

Self-Care

• Stop all steroids wherever it is safely possible, in discussion with the prescribing doctor.
• Sleep 7–8 hours, treat any sleep apnoea.
• Reduce work stress — consider yoga, meditation, regular exercise.
• Limit caffeine, alcohol and smoking.
• Manage blood pressure and obesity.
• Amsler grid weekly to detect recurrence.

When to Come to Us

A new or worsening blur, a fresh dark patch, or recurrence of symptoms after a previous episode — come for an OCT-based evaluation.