- Precision Optics is a major USA manufacturer of endoscopes, stereoscopes, and beamsplitters ISO 9001 registered products approved for CE marking. POC is an OEM supplier of advanced medical optics, image couplers, and optical instrumentation for minimally invasive medical applications. Click here to enter POC's on-line Medical Products Catalog Click here to download an 877.1K PDF file of the ...www.poci.com