Selective retina therapy with automatic real-time feedback-controlled dosimetry for chronic central serous chorioretinopathy in Korean patients

  • Young Gun Park
  • Seungbum Kang
  • Minhee Kim
  • Nari Yoo
  • Young Jung RohEmail author
Retinal Disorders



To evaluate the safety and efficacy of selective retina therapy (SRT) with real-time feedback-controlled dosimetry (RFD) in the treatment of chronic central serous chorioretinopathy (CSC).


In this retrospective case series study, 50 eyes of 49 patients with chronic CSC demonstrating focal or diffuse foveal leakages on fundus fluorescein angiography (FFA) were included. Following evaluation of test spots at temporal arcades, SRT (wavelength 527 nm, pulse repetition rate 100 Hz, pulse energy ramp with maximal 15 pulses) with retinal spot diameter of 200 μm was applied to the areas of each leakage observed on fluorescein angiography. Changes in mean best corrected visual acuity (BCVA), maximum macular thickness (MMT), subretinal fluid (SRF) height, and subfoveal choroidal thickness (SCT) were evaluated at 1, 2 and 3 months after treatment. RFD was used for adjusting the pulse energy. Eyes received a mean of 21.1 ± 18.1 treatment spots with a range of energies between 50uJ and 200uJ per pulse.


Subretinal fluid (SRF) was completely resolved in 74% (37/50 eyes) at month 3. Mean BCVA (LogMAR) was improved from 0.44 ± 0.29 at baseline to 0.37 ± 0.32 at month 3 (p = 0.001). MMT was decreased from 335.0 ± 99.8 μm at baseline to 236.4 ± 66.4 μm after 3 months (p < 0.001). SRF height was decreased from 168.0 ± 77.3 μm at baseline to 29.0 ± 57.3 μm after 3 months (p < 0.001). However, the changes in SCT were not statistically significant (p = 0.48).


SRT treatment with RFD showed favorable visual and anatomical outcomes in patients with chronic CSC.


Selective retina therapy Chronic central serous chorioretinopathy Reflectometry Optoacoustic dosimetry Real-time feedback-controlled dosimetry 


Compliance with ethical standards


No funding was received for this research.

Conflict of interest

All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest or non-financial interest in the subject matter or materials discussed in this manuscript.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study.

Financial interest

None of the authors has any financial interest in any of the products described.

Supplementary material

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Copyright information

© Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Young Gun Park
    • 1
  • Seungbum Kang
    • 2
  • Minhee Kim
    • 1
  • Nari Yoo
    • 1
  • Young Jung Roh
    • 1
    Email author
  1. 1.Department of Ophthalmology and Visual Science, Yeouido St. Mary’s HospitalCatholic University of KoreaSeoulRepublic of Korea
  2. 2.Department of Ophthalmology and Visual Science, Daejeon St. Mary’s HospitalCatholic University of KoreaDaejeonRepublic of Korea

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