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 Table of Contents  
REVIEW ARTICLE
Year : 2022  |  Volume : 12  |  Issue : 4  |  Page : 394-408

Central serous chorioretinopathy: Treatment


Department of Ophthalmology, Kyung Hee University Hospital, Kyung Hee University, Seoul, Korea

Date of Submission06-Sep-2022
Date of Acceptance12-Oct-2022
Date of Web Publication28-Nov-2022

Correspondence Address:
Prof. Seung-Young Yu
Department of Ophthalmology, Kyung Hee University Hospital, 23, Kyungheedae-ro, Dongdaemun-Gu, Seoul 02447
Korea
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2211-5056.362040

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  Abstract 


Central serous chorioretinopathy (CSC) is a pachychoroid spectrum disease characterized by serous detachment of the neurosensory retina with subretinal fluid in young and middle-aged adults. The pathogenesis of CSC is not yet fully understood. However, it is considered a multifactorial disease that is strongly associated with choroidal dysfunction or vascular engorgement. Although there is no consensus on the treatment of CSC, photodynamic therapy has been effectively used to manage serous retinal detachment (SRD) in CSC. Moreover, micropulse diode laser photocoagulation and focal laser treatment have also been used. Recently, oral medications, including mineralocorticoid receptor antagonists, have been proposed for the management of CSC. Multimodal imaging plays a significant role in the diagnosis and treatment of CSC. Optical coherence tomography angiography (OCTA) has the advantage of detecting vascular flow in the retina and choroid layer, allowing for a better understanding of the pathology, severity, prognosis, and chronicity of CSC. In addition, early detection of choroidal neovascularization in CSC is possible using OCTA. This review article aims to provide a comprehensive and updated understanding of CSC, focusing on treatment.

Keywords: Central serous chorioretinopathy, micropulse diode laser photocoagulation, mineralocorticoid receptor antagonist, photodynamic therapy


How to cite this article:
Park JB, Kim K, Kang MS, Kim ES, Yu SY. Central serous chorioretinopathy: Treatment. Taiwan J Ophthalmol 2022;12:394-408

How to cite this URL:
Park JB, Kim K, Kang MS, Kim ES, Yu SY. Central serous chorioretinopathy: Treatment. Taiwan J Ophthalmol [serial online] 2022 [cited 2023 Jan 28];12:394-408. Available from: https://www.e-tjo.org/text.asp?2022/12/4/394/362040




  Introduction Top


Central serous chorioretinopathy (CSC) is the fourth most common chorioretinal disorder worldwide. It has the following characteristics: (1) the condition usually affects young and middle-aged adults, (2) serous retinal detachment (SRD) and/or retinal pigment epithelium (RPE) detachment at the posterior pole with the accumulation of subretinal fluid (SRF), and (3) one or multiple leakage areas that originate from the choroid through an RPE defect on fluorescein angiography (FA).[1],[2],[3] In acute cases, FA demonstrates a focal leaking point with an “Inkblot” or “smokestack” dye diffusion pattern. However, multiple leaking points could also be observed.[4] Indocyanine green angiography (ICGA) confirms the delay of initial filling of arteries, dilated large choroidal vein, and choroidal hyperpermeability.[5],[6] Previous studies have demonstrated that CSC occurs in the third and fourth decade of life, widely between 20 and 65 years of age.[7],[8],[9] Increasing choroidal hyperpermeability and RPE dysfunction contribute to SRF accumulation.[10]

The incidence of CSC has been reported at 9.9 cases/100,000 men compared with 1.7/100,000 women.[7] There are a variety of known risk factors for CSC, such as type A personality, psychosocial stress, corticosteroids, endogenous hypercortisolism, obstructive sleep apnea, Helicobacter pylori infection, phosphodiesterase-5 inhibitors (sildenafil, tadalafil), increased cortisol, and pregnancy.[11],[12],[13],[14],[15],[16],[17],[18],[19] Corticosteroids are the most common risk factor, and steroid intake in oral, intravenous, skin creams, nasal spray, and joint injection can affect the occurrence, persistence, and recurrence of CSC.[2] Further, hypertension and cardiovascular disorders are reported in association with CSC.[20],[21]


  Acute Central Serous Chorioretinopathy/Chronic Central Serous Chorioretinopathy Top


CSC can be classified as acute or chronic forms. However, there is no consensus on the definition and duration for terming chronicity due to the variable course of the CSC and discrepancies with classification among ophthalmologists. Therefore, discrepancies in CSC classification and terminology in clinical studies also cause ambiguity in the diagnosis and treatment of patients with CSC.

Acute CSC generally has a good prognosis. Moreover, acute CSC is usually self-limiting and resolves spontaneously within 3–4 months. In this period, resorption of the SRF is observed in most patients within 3–4 months with the recovery of visual acuity.[22],[23] Patients with acute CSC complain of blurry vision, metamorphopsia, and micropsia, but severe vision loss is rare following the condition has resolved. However, recurrent or chronic CSC results in severe visual loss related to atrophy of the RPE and neurosensory layers. Therefore, observation with modification of risk factors is an appropriate treatment for patients with acute CSC.[3]

Chronic CSC is characterized by persistent SRD for longer than 4–6 months, as observed by optical coherence tomography (OCT). In some patients with chronic CSC, permanent atrophy and disruption of the RPE and photoreceptor layer lead to long-term visual impairment, secondary to progressive retinal damage.[24],[25],[26] Acute CSC can also lead to multiple recurrences of SRD with persistent SRF. Furthermore, SRF may reappear in 30%–50% of patients within 1 year after the first occurrence of CSC and resolve spontaneously.[27] Although there is no consensus about the definition of chronic CSC, most experts define it as persisting fluid for at least 3–6 months.[28] ICGA–guided verteporfin photodynamic therapy (PDT) has proven to decrease choroidal vascular hyperpermeability and leakage from RPE against chronic CSC. In addition, it has been shown to preserve anatomical function and visual acuity in CSC patients.[29],[30]


  Pathogenesis Top


Although the pathogenesis of CSC has not yet been identified, several hypotheses have been proposed to explain it such as the alteration of the outer blood-retinal barrier, the function of the RPE pump due to defective choroidal circulation,[31],[32] and mechanical obstructions of the vortex vein.[33],[34] Two studies have shown asymmetrical dilatation of the vortex vein in patients with CSC. Furthermore, a recent study demonstrated that patients with CSC had thicker sclera compared with normal eyes, and thicker or rigid sclera showed narrowing of the scleral channel, which results in venous congestion, thus increasing the permeability of the choriocapillaris.[35] The pachyvessels in Haller's layer facilitate mechanical compression of the choriocapillaris and guides the performance of PDT. Moreover, PDT promotes considerable choroidal vessel shrinkage and remodeling, weakening the mechanical compression of the choriocapillaris and improving blood flow.[36]

Although insufficient studies on CSC have been related to systemic inflammatory markers, two studies showed increased levels of inflammatory markers in patients with CSC.[37],[38] They suggested that the inflammatory milieu promotes the generation of reactive oxidative species that cause the destruction of RPE and choroid endothelial cells. Similarly, several studies have indicated that activated platelets promote ischemia and thrombogenesis in the choroidal vessels due to choroidal endothelial dysfunction and inflammation, and CSC patients treated with aspirin showed a resolution of CSC with no improved functional outcomes.[38],[39],[40]

Corticosteroids are widely accepted as strong factors associated with the development of CSC. Some animal studies have suggested that upregulated choroid endothelial calcium-activated potassium channels cause smooth muscle relaxation, and choroidal permeability results from corticosteroids interacting with mineralocorticoid receptors (MRs).[41] Moreover, corticosteroid dysregulating choroid hemodynamics and interrupting ion transport damage the RPE barrier.[42] Furthermore, cortisol has been demonstrated to downregulate cadherin 5 (CDH5) on choroidal vessels, thereby increasing the choroidal vessel permeability.[43] Likewise, previous research has shown the role of corticosteroids in CSC pathogenesis; however, it remains unclear since many clinical studies associated with MR antagonists have failed to consistently prove its anatomical and functional outcomes. Notably, Lotery A et al. showed no benefit of eplerenone in treating chronic CSC.[44] Every patient does not respond equally to MR antagonists, which may be the reason for failing to treat chronic CSC, despite evidence showing its potential role in pathogenesis.[45] Moreover, genetic variants of the MR gene have been proposed as different efficacies or MR antagonists in chronic CSC.[46]

Other risk factors of CSC, such as obstructive sleep apnea, stress, H. pylori infection, and increased cortisol are associated with increased oxidative stress that shows reactive oxygen species-mediated damage to choroid vessels and RPE.[14],[15],[16] Additionally, CSC is associated with autonomic nervous activity imbalances because the autonomic nervous system regulates the choroid vessels that cause autonomic dysfunction, leading to vasospasm, which results in choroid ischemia and hyperpermeability.[47],[48]


  Imaging Top


FA and ICGA have been used for CSC diagnosis imaging. Imaging technologies such as fundus autofluorescence, OCT and OCT angiography (OCTA) have been developed, and multimodal imaging is currently being used for diagnosing CSC. Since multimodal imaging provides various information on CSC progression or status of the choroid, choriocapillaris, photoreceptor, and RPE, ophthalmologists obtain prognostic information from multimodal imaging when diagnosing, evaluating, and determining the treatment of patients with CSC [Figure 1]. Therefore multimodal imaging techniques allow us to better understand pathology, severity, prognosis, and chronicity.[49]
Figure 1: Multimodal imaging of a 46-year-old male patient with CSC. (a) The color fundus photograph shows serous retinal detachment. (b) FAF shows granular hypoautofluorescence in the macula. (c) OCT reveals increased subfoveal choroidal thickness, pachyvessels, and SRF. (d) OCTA of the choriocapillaris layer demonstrates choriocapillary hypoperfusion appearing as a dark spot or dark area related to the SRF. (e) FA shows a focal inkblot leakage pattern in the early phase. (f) ICGA shows dilated choroidal vessels with a focal leakage point in the early phase. (g) FA shows a focal inkblot leakage pattern in the late phase. (h) ICGA demonstrates hyperfluorescence corresponding to the leakage point on FA in the late phase. CSC = Central serous chorioretinopathy, OCTA = Optical coherence tomography angiography, SRF = Subretinal fluid, FA = Fluorescein angiography, ICGA = Indocyanine green angiography, OCT = Optical coherence tomography, FAF = Fundus autofluorescence

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  Treatment Top


Despite the lack of consensus on the most accepted form of treatment for CSC, observation, oral medications, PDT, and laser therapy have been suggested. For treating CSC, the goal is to resolve SRF, reform vascular permeability, and restore RPE and photoreceptor cells.[50] However, the treatment depends on whether CSC is in the acute or chronic stage. In terms of laser therapy, the conventional laser is applied to extrafoveal focal leak points, micropulse laser to juxtafoveal leaks, PDT to subfoveal leaks, and target choroidal vasculature and RPE cells to increase absorption of SRF or decrease the accumulation of fluid in the subretinal space.[51] Recently, there has been a lot of research about oral medications for treating CSC, compared to laser therapy.


  Conventional Laser Photocoagulation Top


In general, conventional laser photocoagulation involves focal coagulation at the RPE level throughout fluorescein angiography-confirmed areas of the focal leaking point.[52] Nevertheless, conventional laser photocoagulation does not target to the choroid, and the mechanism of SRF resolution following focal laser treatment remains unclear. It is suggested that focal laser injury leads to the recruitment of normal RPE cells or direct stimulation of RPE pumping function around the treatment area.[25],[53] Before focal laser treatment, the focal leaking point should be identified at least 375 μm from the fovea.

To reduce the risk of Bruch's membrane rupture, choroidal neovascularization (CNV) development and atrophy of RPE, low intensity, longer duration, and moderate spot size should be used.[25] Studies associated with focal laser photocoagulation showed a variety of results regarding BCVA and recurrences.[54],[55],[56] Although there is significant anatomical improvement after laser photocoagulation, it is less effective in significantly changing visual acuity and recurrence rate.[25] Burumcek et al. reported a decrease in recurrence in the laser photocoagulation group compared with the control group. However, other long-term follow-up studies demonstrated that no significant decrease in recurrence was found between the laser-treated group and the control group.[23],[25],[56],[57] Adverse events following laser photocoagulation treatment, such as CNV, are typically low. Moreover, it should be considered that paracentral scotoma may develop following laser treatment in the juxtafoveal area.[23],[25] The studies evaluating conventional laser photocoagulation treatment of patients with CSC are summarized in [Table 1].
Table 1: Studies evaluating conventional laser photocoagulation treatment of patients with central serous chorioretinopathy

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  Micropulse Diode Laser Photocoagulation Top


Unlike conventional laser photocoagulation, micropulse diode laser therapy delivers a series of ultrashort (810 nm) laser pulses targeting RPE cells with little thermal damage to the RPE and collateral tissues because of the relatively small amounts of energy.[61],[62] It is considered that only the RPE is affected without significantly affecting the retina. Thus it prevents paracentral scotoma, retina scarring, and CNV compared with conventional laser photocoagulation. Micropulse diode laser photocoagulation is useful in patients with chronic CSC with juxtafoveal leaking points or diffuse epitheliopathy. However, it is difficult to assess laser uptake because micropulse diode laser photocoagulation does not cause visible laser burns. To resolve invisible laser burns, Ricci et al. reported an indocyanine green-assisted micropulse diode laser.[63]

One randomized controlled trial demonstrated no statistical difference between the micropulse diode laser photocoagulation and argon laser groups in terms of SRF resolution and final BCVA. However, the micropulse diode laser photocoagulation group showed significantly better contrast sensitivity than the argon laser group. Additionally, no persistent scotoma was found in the micropulse diode laser photocoagulation group, but 20% of the argon laser group patients showed scotoma.[62] The studies evaluating micropulse diode laser photocoagulation treatment of patients with CSC are summarized in [Table 2].
Table 2: Studies evaluating micropulse diode laser photocoagulation treatment of patients with central serous chorioretinopathy

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  Photodynamic Therapy Top


PDT with verteporfin provides high efficacy for SRF resolution, improvement of VA, and reduced recurrence of SRF in patients with chronic CSC. Verteporfin is a photosensitizing agent that is a mixture of benzoporphyrin-derivative monoacids that are cytotoxic only when activated by light in the presence of oxygen. It stimulates the macula at a specific light dose. In PDT treatment, free radicals are released when verteporfin molecules are excited by lasers. Free radicals result in inflammation of the choroidal vascular wall and cause occlusion of the choroidal vessels.[71] Therefore, PDT is suggested to cause a decrease in choroidal hyperpermeability by short-term choriocapillaris hypoperfusion and long-term choroidal microvascular remodeling, resulting in SRF reabsorption.[72],[73] Some authors have suggested that direct effect by PDT on the choriocapillaris endothelium with the choriocapillaris occlusion, resulting in stasis of blood flow and reduction in vascular permeability.[74] In addition, choroidal thickness decreases within 1 month after PDT treatment. Following PDT, choroidal thickness is reduced, both locally and at a considerable distance from the treated area, altering intrachoroidal structures. Thus, the process that causes choroidal thickening in CSC appears to spread laterally within the choroid.[75],[76] Moreover, the photoreceptor layer is usually not damaged because of the high selectivity of PDT.[72] PDT is possible even in cases of chronic CSC with juxtafoveal or subfoveal leakage points or diffuse RPE leakage. Therefore, PDT is considered a more appropriate treatment for CSC pathology.

Generally, standard PDT is given with a 6 mg/m2 verteporfin dose, 50 J/cm2 fluence, 83 s of time, and a spot size larger than 1000 μm to be treated, guided by ICGA. Verteporfin was diluted in 30 ml of infusion solution and administered via IV infusion over 10 min. Light activation by PDT was performed 15 min after the start of infusion. PDT can be applied to single or multiple areas; if SRF persists after PDT treatment, retreatment should be performed at least 3 months later because reducing the treatment interval has no benefit.

However, several studies have reported on dose-dependent complications. Ruiz-Moreno et al. reported that 82 eyes with chronic CSC were treated with a standard PDT protocol, and all eyes showed resolution of SRF. Despite this, two eyes developed iatrogenic CNV, nine developed RPE hyperplasia, and repeated PDT was required in thirteen patients.[77] Standard PDT's complications and risks, including iatrogenic CNV, pigmentary changes in the treated area, foveal injury, and RPE atrophy, pose a threat to visual outcomes.[78],[79] Therefore, to address the safety concerns and reduce the adverse events related to standard PDT, investigators considered changing the PDT setting parameters such as lowering the fluence or PDT dose, and laser treatment time to decrease the risk of complications while maintaining treatment efficacy.[73],[80] Low-dose PDT, which uses half dose of verteporfin (3 mg/m2) and low-fluence PDT, has proven to be an effective treatment for the resolution of chronic CSC.[74],[81],[82],[83],[84] A prospective nonrandomized clinical trial compared the efficacy and safety between half-fluence and full-fluence PDT.[84] At 12 months, BCVA improvement was observed in both groups; however, there was no difference between them. Moreover, SRF reabsorption was found in 79% and 91% of the full-fluence and half-fluence groups, respectively. The other prospective, nonrandomized clinical trial compared the efficacy and safety between half-fluence and half-dose PDT for 6 months.[85] The results revealed no significant differences in the parameters between the two groups. Therefore, half-dose and half-fluence PDT had similar therapeutic effects in improving visual acuity and SRF absorption in chronic CSC.

One retrospective study reported improvement in BCVA and central retinal thickness; however, the differences between groups were not statistically significant.[86] Moreover, subfoveal choroidal thickness decreased in both groups; the full-fluence group showed a greater reduction of subfoveal choroidal thickness than the half-fluence group. Another retrospective study compared the clinical outcomes of 192 CSC patients divided into untreated and half-dose PDT groups (treatemt group) with a minimum follow-up of all patients was 36 months.[87] In the half-dose PDT group, BCVA was significantly better while recurrence of CSC was significantly lower, at the last follow-up. Furthermore, the other prospective, noncomparative case series studies assessing half-dose PDT showed visual improvements and complete SRF absorption.[88],[89]

According to the long term clinical outcomes of a retrospective study evaluating full-fluence and half-fluence PDT for 36 months, either a full-fluence or half-fluence protocol was effective with significant long-term improvement in anatomic and functional outcomes with no recurrences, and very few cases of RPE atrophy were observed with both protocols.[31] Furthermore, to decrease the risk of complications, a study was conducted on PDT spot size.[32] Noh et al. reported that focal verteporfin PDT, confined to areas of localized leakage demonstrated in ICGA compared with conventional verteporfin PDT, covered the total area of abnormal choroidal vessels, including the leakage, resulting in a significant decrease in SRF and subfoveal choroidal thickness as well as conventional PDT during the 1-year follow-up.[32] RPE atrophy was observed as a complication in one eye and three eyes in the focal and conventional verteporfin PDT groups, respectively. However, there was no statistical difference between the two groups.

Recently, a study on the efficacy of treatment with high-density subthreshold micropulse laser (HSML) and PDT in patients with chronic CSC has been conducted.[64] The PLACE trial is the largest multicenter, randomized controlled clinical trial to compare the anatomic and functional efficacy and safety of half-dose PDT versus HSML treatment in patients with chronic CSC. At the final evaluation visit, a significantly higher percentage of PDT-treated patients demonstrated no SRF (67.2% vs. 28.8%; P < 0.001). Moreover, the PDT-treated patients showed a significantly higher increase in BCVA and a significantly higher increase in retinal sensitivity. Therefore, half-dose PDT is superior to HSML for treating chronic CSC, leading to a significantly higher proportion of patients with complete resolution of SRF and functional improvement.[64]

There are few randomized studies evaluating PDT in CSC patients despite its many therapeutic advantages, and further investigation is needed to standardize PDT treatment in terms of dose, fluency, and time. The studies evaluating PDT treatment of patients with CSC are summarized in [Table 3].
Table 3: Studies evaluating photodynamic therapy of patients with central serous chorioretinopathy

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  Anti-Vascular Endothelial Growth Factor Therapy Top


Intravitreal anti-vascular endothelial growth factor (VEGF) injections have been suggested to effectively reduce choroidal hyperpermeability and proliferative activity of choroidal endothelial cells without clear evidence of increased VEGF levels in the aqueous humor of patients with CSC.[103],[104] Additionally, anti-VEGF is thought to control the tight junctions between endothelial cells and reduce vascular fenestrations.[105]

Altering choroidal vascular permeability with intravitreal anti-VEGF injection has been suggested as a possible treatment for CSC since CSC is thought to be related to choroidal vasculature.[106] However, anti-VEGF therapy for treating CSC is generally off-label. The effects of anti-VEGF treatment in patients with CSC have been reported in various ways.

Several studies have proven the efficacy of anti-VEGF therapy associated with the resolution of neurosensory detachment and improvement of visual acuity.[107],[108] Moreover, the anti-VEGF agent may be a better treatment compared with PDT in CSC patients with fibrin observed in the fovea, indicating abnormal choroidal vessel leakage.[109] In cases where verteporfin molecules bind to fibrin and PDT may cause RPE damage with energy accumulation, anti-VEGF therapy prevents complications.

However, the positive therapeutic effects of intravitreal anti-VEGF injections for CSC have not been confirmed in a meta-analysis. Bae et al. performed a prospective, randomized study of chronic CSC comparing ranibizumab with half-fluence PDT.[110],[111] This study demonstrated the superiority of PDT over ranibizumab in terms of complete resolution of SRF and decreased choroidal hyperpermeability. Furthermore, chronic CSC patients treated with aflibercept appeared to have a significant resolution of SRF but no significant improvement in visual acuity in the contain study that suggested aflibercept showed clinical efficacy for better anatomical outcomes rather than functional outcomes.[112]

Although many studies have been conducted on anti-VEGF therapy for patients with CSC, no large randomized controlled clinical trials have been performed. Therefore, further large randomized controlled trials with long-term follow-up are needed to prove the positive effects of anti-VEGF therapy for CSC. The studies evaluating anti-VEGF treatment of patients with CSC are summarized in [Table 4].
Table 4: Studies evaluating anti-vascular endothelial growth factor treatment of patients with central serous chorioretinopathy

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  Mineralocorticoid and Glucocorticoid-Receptor Antagonist Top


Recently, many studies have investigated the use of MR and glucocorticoid receptor (GR) antagonists for the treatment of CSC worldwide. An increase in endogenous and exogenous corticosteroids was found to be related to CSC, and investigations about the mineralocorticoid pathway, which is a predominant pathway in CSC, have been performed.[41],[120] Interestingly, a cross-sectional study of 13 patients with primary hyperaldosteronism demonstrated that retinal abnormalities similar to subclinical CSC were found in patients with primary hyperaldosteronism.[120] According to Zhao et al., CSC is correlated with abnormal activation and overexpression of ocular MR, and aldosterone or a high dose of GR increased the expression of water and ion channels on the outer limiting membrane in an animal model, related to the SRF, dilation of the choroid vessels, and leakage.[41] Similar findings have been reported in human Muller glial cell lines.[121] Based on these findings, the authors treated two patients with nonresolving chronic CSC with eplerenone for 5 weeks. These results support the MR signaling pathway as a control for choroidal vasculature, and blockage of MR as a treatment strategy for patients with CSC. Therefore, MR and GR antagonists are expected to alleviate SRF in CSC patients because of an increase in cortisol and dysregulation of endogenous MR.[122]

MR antagonists' spironolactone and eplerenone have been employed in numerous retrospective and prospective studies to treat CSC. The binding affinity for MR was higher for spironolactone than for eplerenone. However, close monitoring of potassium level and renal function should be performed, and cardiac arrhythmia related to hyperkalemia should be considered before using MR antagonists. In addition, systemic side effects can also occur, such as hyperkalemia, hypotension, hypertriglyceridemia, hyponatremia, mastodynia, abnormal vaginal bleeding, and gynecomastia[123],[124]

Eplerenone is a specific MR antagonist, used in heart failure management. Eplerenone is associated with a decreased incidence of spironolactone-related adverse events due to its molecular structure, increased selectivity, and fewer side effects related to the activation of progesterone receptors.[125],[126] Bousquet et al. treated 13 patients with CSC with 25 mg/day of oral eplerenone for a week followed by 50 mg/day for 1 or 3 months. They reported a significant decrease in central macular thickness (CMT) after 1 and 3 months, a significant decrease in SRF after 3 months, and a significant improvement in BCVA.[127] Another prospective, placebo-controlled, double-blinded study randomized 17 patients with chronic CSC to either eplerenone (50 mg/day) or placebo for 3 months. There was no significant difference in SRF and BCVA between the two groups.[128] Additionally, a large-scale, randomized, double-blind, placebo-controlled trial randomized 114 patients with chronic CSC to either eplerenone or placebo. Its result suggested that eplerenone was not superior to placebo.[44] Recently, a multicenter, open-label, randomized controlled spectra trial reported that half-dose PDT is superior to oral eplerenone for chronic CSC patients concerning efficacy outcomes.[129]

Spironolactone is a potassium-sparing diuretic that acts as a competitor for aldosterone. Various studies have confirmed the clinical effects of spironolactone in decreasing CMT, resolving SRF, and improving BCVA in CSC patients.[130],[131],[132],[133],[134] Pichi et al. performed a prospective, placebo-controlled study to compare treatment with eplerenone and spironolactone in patients with chronic CSC, and concluded that spironolactone was comparable to eplerenone in resolving SRF and statistically superior to eplerenone in improving BCVA. In addition, both were superior to placebo in resolving SRF and improving BCVA.[130] Furthermore, large prospective randomized trials are needed to better estimate the role and clinical efficacy of spironolactone in CSC.

Mifepristone is a high-affinity GR and progesterone receptor antagonist used in gynecological clinical practice.[135] However, few studies have assessed mifepristone in patients with CSC. Thus, more evidence is needed to describe the clinical efficacy of mifepristone.[136],[137] The studies evaluating mineralocorticoid receptor antagonist of patients with CSC are summarized in [Table 5].
Table 5: Studies evaluating mineralocorticoid receptor antagonist of patients with central serous chorioretinopathy

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  Conclusion Top


There are several treatment options for CSC; however, it is challenging in the real world because laser treatment and oral medication are not consistently effective, particularly in patients with chronic CSC. Because there is poor evidence for anti-VEGF therapy and oral medication, the appropriate treatment of choice for CSC remains controversial. In addition, the definition of the criteria for acute and chronic CSC should be considered, and the nomenclature needs specific modifications and a wider agreement to be implemented in clinical practice and clinical studies. Recently, large multicenter prospective randomized controlled trials were conducted, and, as a result, the treatment outcomes and strategies are gradually evolving. In the future, based on the analysis of more clinical studies, it is expected that the most appropriate treatment methods for patients with CSC will be determined.[140]

Declaration of patient consent

The authors certify that they have obtained all appropriate patient consent forms. In the form, the patient has given his consent for his images and other clinical information to be reported in the journal. The patient understands that name and initial will not be published and due efforts will be made to conceal identity, but anonymity cannot be guaranteed.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.



 
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    Tables

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Abstract
Introduction
Acute Central Se...
Pathogenesis
Imaging
Treatment
Conventional Las...
Micropulse Diode...
Photodynamic Therapy
Anti-Vascular En...
Mineralocorticoi...
Conclusion
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