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Diode (810 nm) laser photocoagulation using the indirect ophthalmoscopic delivery system is the preferred modality for treatment of retinopathy of prematurity (ROP).1 2 Previously, an argon green laser (488–528 nm) was used for treatment but was reported to have a higher incidence of cataract and was not popular.3 A frequency-doubled Nd:YAG laser (532 nm green) is commonly used for treatment of retinal vascular disorders. However, its use for treatment of ROP is anecdotal4 and has not been compared with that of a standard diode laser. The purpose of this study was to compare both these laser frequencies in treatment of ROP.
A retrospective chart review of infants treated with a laser for ROP at a tertiary care centre was done to retrieve various parameters including spectrum of ROP, type of laser used, laser parameters, complications of treatment, retreatment rate and outcome. This study included infants born at our centre and …