Optic Bridges have brought about a significant change in the manner of performing urea measurements and analysis. In addition, an optic bridge is non-invasive monitoring system, designed to figure out blood glucose levels in diabetic patients. It is simple, yet gives optimum performance and yields accurate measurement. The Optical Bridge is corresponding to Wheatstone bridge, which is generally used for gauging and making other measurement. This tool is designed to measure subtle changes by detecting small signal in the light transmission. It is accepted that optical bridge is able to abrogate the background signal from the sample by gauging the difference in light transmission between pair of wavelengths.