dark adaptation

This period of improving vision in dim light is called dark adaptation.

Dark adaptation times vary from about fifteen minutes to overnight.

He turned away again, facing toward the darkness, and deliberately accelerated his eyes' dark adaptation.

Changes in the sensitivity of rods and cones in the eye are the major contributors to dark adaptation.

The van's internal lighting brightened just a little, in red wavelengths designed to help maintain the passengers' dark adaptation.

Under these conditions, some astronomers prefer to observe under a black cloth to ensure maximum dark adaptation.

During dark adaptation, the resting potential decreases slightly and reaches a minimum ("dark trough") after several minutes.

A red flashlight (torch) can be used to illuminate star charts, telescope parts, and the like without undoing the dark adaptation.

In sufficiently bright light, convergence is low, but during dark adaptation, convergence of rod signals boost.

And all the while I was trying to keep up my all-around awareness, protecting my dark adaptation, and making appreciations.

Dark adaptation, motor skills, docosahexaenoic acid, and dyslexia.

Because stargazing is best done from a dark place away from city lights, dark adaptation is important to achieve and maintain.

Dark Adaptation - the participants were completely dark adapted (a process lasting forty minutes) in order to optimise their visual sensitivity.

Four factors affect dark adaptation:

These tests commonly require overnight dark adaptation, and fifteen to twenty minutes in lighted conditions to reach steady state photosynthesis before measurement.

For example, changes in electrical synapses in the retina are seen during light and dark adaptations of the retina.

Wavelength of the Threshold Light Varying the wavelengths of stimuli also effect the dark adaptation curve.

Full adaptation is dependent on good blood flow; thus dark adaptation may be hampered by poor circulation, and vasoconstrictors like tobacco.

In older eyes, this phenomenon, called dark adaptation, takes longer, which means you see less well in the dark after being in the light, and vice versa.

(Betan eyes have superb dark adaptation.)

Melanopsin-containing ganglion cells exhibit both light and dark adaptation, that is, that they adjust their sensitivity according to the recent history of light exposure.

The ABCR -/- knockout mouse has delayed dark adaptation but normal final rod threshold relative to controls.

A prolonged dark adaptation of three hours or more, leads to disappearance of this unusual discoloration and the appearance of a normal reddish appearance.

The eye and brain "edit out" the shadow lines of the capillaries, partially by dark adaptation of the photoreceptors lying beneath the capillaries.

Rhodopsin Regeneration Dark adaptation depends upon photopigment bleaching, which effects the threshold of both cones and rods.