Treatment Outcome of Subthreshold Micropulse Green Laser SMGL (532 nm) in Chronic Central Serous Chorioretinopathy

Subthreshold micropulse green laser (532nm) is effective for treatment of chronic CSCR with promising results.

To assess the treatment outcome of a single session subthreshold micropulse green laser (SMGL) 532nm in chronic central serous chorioretinopathy (CSCR).

This was a prospective noncomparative consecutive case series. Eyes with chronic CSCR were treated with SMGL and evaluated at 1- and 3-months post laser. Best Corrected Visual Acuity (BCVA) and Central Macular Thickness (CMT), and Subretinal Fluid Height (SFR) following laser were evaluated.

A total of 16 eyes of 13 patients with the diagnosis of chronic CSCR were enrolled in this study. The mean age of the patients was 45 years (range 31-60 years). All of the patients had a history of CSCR of more than 4 months duration (mean 7.9 months ± 3.01). The median baseline BCVA was 0.4 log MAR which improved to 0.25 log MAR. Of the 16 eyes, 1 eye had 3 lines of improvement (6.25%), 4 eyes had 2 lines of improvement (25%), and 3 eyes had 1 line of improvement (18.75%) and 8 eyes-maintained vision (50%). The mean SRF height pre and post laser was 191.813 µm and 54.93 µm, respectively (P<0.001). Similarly, the mean CMT pre and post laser was 328.18 µm and 242.87 µm, respectively (P<0.009). There was complete resolution of PED in 3 out of 5 eyes (60%).

Subthreshold micropulse green laser (532nm) is effective for treatment of chronic CSCR with promising results.