Molecular mechanism of short pulse laser retinal photocoagulation in ischemic retina

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Short pulse duration laser has been reported that induced less damage into inner retina and less pain for patients. However, some researchers reported that retinal photocoagulation with short pulse laser might be less effective than that with conventional laser photocoagulation. The purpose of this study was to determine the efficacy of short pulse laser photocoagulation in ischemic murine retina. Short pulse laser induced less damage to the murine inner retina, and the size of lateral scar formation was 70% of that with conventional laser. And the reduction of VEGF was less with short pulse laser compared with conventional laser. Our findings indicated that we have to perform laser photocoagulation with tighter spacing and more number of treatment spots when we use short pulse laser.