En passant, my paper--Some measurements made with the Fincham haploscope co-incidence optometer
(Optician April 18, 1969)--included results for convergence-induced accommodation (accommodation induced by convergence alone), which was exceptional for subject G, a -4.50 myopic student.
For overall light level measurements in the broad stimulation experiments, a United Detector Technology optometer
gave a direct readout in milliwatts per square centimeter.
A self-test optometer
. This is a simple folding cardboard device used test the range and power of vision.
(39) Irradiance levels presented in this study were obtained with a Daavlin X96 irradiance meter, P9710 optometer
(accuracy, [+ or -] 5%).
Measurements of irradiance were made using a GigaHertz-Optik model P9710 optometer
and a model UV-3718-2 flat UV sensor (Puchheim, Germany).
Designed and configured for all LED measurement requirements, UDT Instruments' S-741 LED optometer
features microprocessor control and three measurement data-presentation options: direct display measurement with analog bar, RS-232C computer interface, and analog voltage input.
In combination with a proprietary single-or multi-channel optometer
, it can measure and monitor solar blind UV-C irradiance from 0.01 [micro]W/[cm.sup.2] to 25 W/[cm.sup.2] over a 220-to 280-nm spectral range.
The P-9710 Optometer
is designed specifically for telecommunication testing.
Using the newly developed laser optometer
(Hennessy & Leibowitz, 1970, 1972), Leibowitz and his colleagues found new evidence for the intermediate resting-state theory and discovered wide individual differences in resting-state measures (Leibowitz & Owens, 1975b, 1978).
Irradiance at the level of the specimens in the cuvette was measured using an optometer
and calibrated radiometric probe (models S471 and 260, UDT Instruments).
In combination with the company's single or multi-channel optometer
, irradiance from 1 nW/[cm.sup.2] to 3W/[cm.sup.2] 5 mm over a broad 250 to 1,100 nm spectral range can be measured and monitored.