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Subretinal fluid (SRF) is fluid that collects between the neurosensory retina and the retinal pigment epithelium (RPE). It is a clinical finding rather than a single diagnosis. SRF can distort the retina's normal shape and affect central vision when it involves the macula. The best treatment depends on what is causing the fluid to leak or accumulate.
read more about subretinal fluid srf ...Central serous chorioretinopathy is a common cause, where fluid leaks and builds up under the retina. SRF can also occur with retinal detachment, where fluid enters through a retinal tear and lifts the retina off its support layer. Abnormal vessels from macular degeneration or other choroidal neovascular conditions can leak and create subretinal fluid in or near the macula. Inflammation inside the eye can also disrupt barriers and cause fluid accumulation. Because causes range from self-limited to urgent, diagnosis starts with imaging and a careful exam.
Symptoms often include blurred central vision, distortion where straight lines look bent, or objects looking smaller than expected. A central gray spot or reduced contrast can occur when SRF involves the macula. Some people notice symptoms only in one eye, which can make changes harder to catch without covering one eye at a time. Vision can fluctuate, especially in central serous chorioretinopathy, where fluid levels can change over weeks. Flashes, many new floaters, or a curtain-like shadow suggests a tear or detachment and needs urgent evaluation.
Optical coherence tomography (OCT) is the main test used to confirm SRF because it shows fluid under the retina in cross-section. A dilated exam helps the clinician look for a tear, detachment, inflammation, or signs of macular degeneration. Fluorescein angiography can show leakage patterns and can help identify choroidal neovascularization or central serous leakage points. In some cases, indocyanine green angiography is used to evaluate the choroid when central serous disease is suspected. Diagnosis also includes reviewing risk factors such as steroid exposure, stress patterns, and systemic vascular disease.
Treatment depends on the cause, since SRF can represent very different problems. Central serous cases are often monitored at first, along with addressing triggers such as steroid use when relevant and medically appropriate. SRF from choroidal neovascularization is often treated with injections that reduce leakage and stabilize vision. SRF from rhegmatogenous retinal detachment typically needs urgent surgical repair to reattach the retina. Inflammatory causes are treated by controlling inflammation, sometimes with targeted medicine based on the diagnosis.
No. SRF describes fluid under the retina, while retinal detachment is a condition where the retina lifts away from its support layer. Retinal detachment often involves SRF, but SRF can occur in other conditions such as central serous chorioretinopathy. Imaging and exam findings separate the cause.
Yes, SRF can resolve in conditions like central serous chorioretinopathy, especially in first episodes. Other causes, such as detachment or neovascular leakage, usually do not resolve without treatment. A clinician can estimate the likely course after imaging.
SRF near the macula often affects vision because the macula supports sharp detail. Small peripheral areas can cause few symptoms. Location and amount of fluid strongly influence what a person notices.
Retinal Detachment. EyeWiki. https://eyewiki.org/Retinal_Detachment. Date Accessed February 4, 2026.
Exudative Retinal Detachment. EyeWiki. https://eyewiki.org/Exudative_Retinal_Detachment. Date Accessed February 4, 2026.
Optical Coherence Tomography. EyeWiki. https://eyewiki.org/Optical_Coherence_Tomography. Date Accessed February 4, 2026.
What is Central Serous Chorioretinopathy? American Academy of Ophthalmology. https://www.aao.org/eye-health/diseases/what-is-central-serous-retinopathy. Date Accessed February 4, 2026.
Exudative Retinal Detachment. StatPearls (NCBI Bookshelf). https://www.ncbi.nlm.nih.gov/books/NBK589701/. Date Accessed February 4, 2026.