dark adaptation

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  • noun

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the process of adjusting the eyes to low levels of illumination

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References in periodicals archive ?
The dark-adapted naked eye has an aperture about 7 mm in diameter (the pupil), and from a dark observing site stars down to about magnitude +6.
In comparison to continuously dark-adapted leaves, illuminated leaflets showed significant reduction in Fv/Fm at 1000h, 1200h and 1400h when PPF and air temperature were highest during the day (Fig.
Let us first discuss what happens when one illuminates a dark-adapted leaf, i.
In particular, their practical utility is illustrated by analysis of gold particles labelling the phosphoprotein, phosducin, in subcellular domains of rod photoreceptors in the retinas of light- and dark-adapted groups of rats (Chen et al.
All of the patients self-reported improved vision under dim light conditions, and the authors measured significant increases in dark-adapted visual sensitivity in the treated eye after therapy compared to before therapy; the untreated eyes did not change.
Following L&Z supplementation, a significant MPOD increase was accompanied by improved pattern electroretiongram amplitude and increased dark-adapted cone sensitivity.
Leaves were dark-adapted for 10 minutes and chlorophyll fluorescence was measured using an Opti-Sciences OS-30 fluorometer.
Give your eyes at least 20 minutes to become accustomed to the dark and don't look at bright lights once your eyes have dark-adapted.
The dark-adapted eye becomes more sensitive to the effects of light stimulus.
It was easier to manipulate them in room light, and dark-adapted cells had a tendency to stick to the sides of the cuvette at the entrance and exit of the light beam.
But when using dark-adapted eyes, Nilsson noted that different units did not process light as expected -- suggesting an unknown mechanism was responsible.