{TAIL ~ The present invention} relates to cameras for the diagnosis of retinal disease, and, in particular to a system for synchronizing the flash unit of {HEAD ~ a monocular retina camera} with a digital camera system 
{ TAIL ~ The present invention } relates to cameras for the diagnosis of retinal disease , and , in particular to a system for synchronizing the flash unit of { HEAD ~ a monocular retina camera } with a digital camera system
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