@article {Ernst431, author = {W. Ernst and D. J. Faulkner and C. R. Hogg and D. J. Powell and G. B. Arden and Vaegan}, title = {An automated statis perimeter/adaptometer using light emitting diodes.}, volume = {67}, number = {7}, pages = {431--442}, year = {1983}, doi = {10.1136/bjo.67.7.431}, publisher = {BMJ Publishing Group Ltd}, abstract = {An automated static perimeter/adaptometer is described which measures thresholds with lights of 2 wavelengths. The instrument uses light-emitting diodes to produce the stimuli and is controlled by a small computer, making it very suitable for clinical testing of large numbers of patients. The use of 2 LEDs with different peak emission wavelengths (530 and 660 nm) permits an assessment of the relative state of rod and cone mechanisms in a particular region of the retina either during dark adaptation or when the eye is fully dark adapted.}, issn = {0007-1161}, URL = {https://bjo.bmj.com/content/67/7/431}, eprint = {https://bjo.bmj.com/content/67/7/431.full.pdf}, journal = {British Journal of Ophthalmology} }