The Newest Generation of Photocoagulation Laser Systems more choices and colors configuration Customized for the best clinical result. One of the main advantages of yellow laser light comes from the (577 nm) Yellow laser light which offers the clinician maximal amalgamation in hemoglobin with zero or minor absorption in macular xanthophyll. Green (532 nm) Green laser light is a clinically-proven wavelength that is brilliant at selecting the melanin-containing retinal pigment epithelium (RPE), through clear ocular media. In addition to easily piercing through nuclear sclerotic cataracts, the yellow wavelength is desirable when it is necessary to penetrate through fluid, such as when treating a retinal separation or tear. It is suited for a variety of retinal treatments in which melanin is the target chromophore, such as pan-retinal photocoagulation (PRP). It also penetrates mild pigmentary disturbances and so is well suited for conditions where the target lies in a region of previous photocoagulation treatment.