Y-YBAR is producing medical devices for the research in ophthalmolgy. these devices -based on laser doppler flowmetry- measure relative choroidal blood flow. if you are conducting research in vascular system of the eye, for example in the case of glaucoma, if you need an objective criterion to measure the effect of your vascular treatment, if you want to know the effect of your drug on choroidal blood flow then our devices are for you.