The refractometer is a laboratory device primarily used to measure the refractive index (RI) of samples. The refractive index is an indicator of the behavior of light on that sample. By knowing the refractive index, one can confirm the purity of a...
Portable Auto Refractometer Vision Screener V100 is a portable diagnostic device to quicky detect vision abnormalities on patients aged from 6 months to adults. Description: V100 can screen both eyes at once from 1 meter away....