Abstract
Aim The aim of this study was to evaluate the effects of subthreshold micropulse yellow 577-nm laser photocoagulation on eyes with diabetic macular edema (DME). Patients and methods In this prospective interventional case series, 20 eyes of 20 patients with previously treated centre involving DME received one single session of yellow micropulse 577-nm laser photocoagulation. Treatment was delivered using the IQ 577-nm laser system. Fixed treatment parameters were used in all cases: 200-µm spot size, 200-ms exposure duration, 400-mW powers, and a 5% duty cycle. Confluent applications with no spacing were administered over the entire edematous area including the fovea. Results The baseline best-corrected visual acuity was 0.42±0.15 logMAR, which improved to 0.3±0.26 logMAR at the final follow-up (P Conclusion Subthreshold micropulse yellow 577-nm laser photocoagulation is effective in treating DME.
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