<p>532-nm Subthreshold Micropulse Laser for the Treatment of Chronic Central Serous Retinopathy</p>

Abstract

Introduction: Subthreshold micropulse laser treatment with a 532 nm (532-SML) wavelength has been suggested as a treatment option for the treatment of chronic central serous retinopathy (cCSR). The objective is to present its effects and complications. Methods: We present a retrospective cohort study of cCSR patients submitted to 532-SML. Best-corrected visual acuity (BCVA) and spectral-domain optical coherence tomography (SD-OCT) parameterscentral macular thickness, subfoveal outer nuclear layer, external limiting membrane, ellipsoid band, interdigitation band, subretinal fluid and choroidal thicknesswere evaluated before and 12 weeks after treatment. A power of 50%, a duty cycle of 5%, exposure time of 200 ms and a spot size of 160 µm were the applied laser parameters. Results: We included 26 eyes. Overall there were no significant changes in visual acuity (median 0.20 (IQR 0) logMAR before and after treatment) or SD-OCT parameters. However, visual benefits occurred in 42.3% (n=11) of the patients and in half of the cases, subretinal fluid was completely reabsorbed. There were no complications. Conclusion: In this study, 532-SML was overall ineffective on cCSR as it did not lead to significant changes in the overall median visual acuity and SD-OCT parameters. However, some patients may have benefited functionally and anatomically from the treatment; further investigation is necessary to understand the potential of 532-SML.

Micropulse Laser Therapy as an Integral Part of Eye Disease Management

“…Nevertheless, 42.3% ( n = 11) of the subjects experienced visual benefits, and subretinal fluid was totally reabsorbed in 50% of the cases. Complications were not observed [ 71 ].…”