PubMed · 1817221
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
S Salmons, J C Jarvis. 1991. Simple optical switch for implantable devices.. https://doi.org/10.1007/bf02442330
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
Explore the source record for details and available documents.
A new pupillometer for measuring the size of the pupil of the human eye is described. It uses two inexpensive 256-element charge coupled device (CCD) arrays in an orthogonal configuration. The system is controlled and data are analysed by means of a Z80A microcomputer. Software allows the position and diameter of the pupil to be displayed on a monochrome video monitor. Infra-red diodes irradiate the eye so that measurements can be made in darkness. The accuracy is better than +/- 0.1 mm, over the range 3.2-9.5 mm. Dynamic measurements of the pupil light reflex response can be made with sampling periods as short as 20 ms.
Explore the source record for details and available documents.