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. 1983 Jul;67(7):431-42.
doi: 10.1136/bjo.67.7.431.

An automated statis perimeter/adaptometer using light emitting diodes

W Ernst, D J Faulkner, C R Hogg, D J Powell, G B Arden, Vaegan

An automated statis perimeter/adaptometer using light emitting diodes

W Ernst et al. Br J Ophthalmol. 1983 Jul.

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.

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