Request InfoCoherent Inc.Coherent Inc. has unveiled two optically pumped semiconductor lasers for photocoagulation treatment of wet-form macular degeneration and of diabetic retinopathy. The OPSL-532-5 is a 5-W green laser with output of 532 nm, while the OPSL-577-3 delivers 3 W of yellow output at 577 nm. The wavelength of the latter device is precisely matched to the main absorption peak of oxygenated hemoglobin, thus providing a higher degree of tissue selectivity. 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