scotopic vision

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scotopic vision

[skə′täp·ik ′vizh·ən]
(physiology)
Vision that is due to the activity of the rods of the retina only; it is the type of vision that occurs at very low levels of illumination, and it can detect differences of brightness but not of hue. Also known as night vision.
References in periodicals archive ?
In summary, although influencing factors such as pupil size and accommodation status impose challenges to obtaining reliable aberration measurements in children, our study showed that satisfactory intra- and intersession repeatability could be achieved under scotopic conditions by using iTrace.
The ERG recordings at 12 months of age were reduced in both C3-/- and WT mice (** p < 0.01 for scotopic and photopic conditions); however, when analyzing mixed rod- cone responses and OPs, the b-wave amplitudes in C3-deficient mice were significantly higher (** p < 0.01) compared to age-matched WT animals.
7 and 8 than the difference between the photopic and scotopic efficacy functions.
Our results show drat GLE in mice with [BPb] at the current low level of concern (CDC 1991) produced persistent retinal alterations characterized by proportional increases in rod and rod BC neurogenesis that likely underlie the observed scotopic ERG super-normality (Fox et al.
This is the first study to compare the scotopic visual functions of Pacific bluefin tuna with those of other fishes by ERG.
Various lamps emit light with distinctly different spectra, and not all are a good match to the scotopic sensitivity range.
Civil twilight therefore represents an important transition time when the visual system shifts from photopic (day) to scotopic functioning.
Atrophy of the choriocapillaris and outer retinal layers were evident on OCT, photopic and scotopic responses were attenuated on flash electroretinography (ERG), and responses were also minimal in pattern and multifocal ERG (see pages 298-301).
The first example of varying perceptual accuracy can be observed in scotopic (rod-mediated) conditions.
Scotopic and photopic ERG responses were measured as indicators of retinal functional changes caused by diabetes.
Preoperative evaluation consisted of uncorrected visual acuity for both--distance and near; best spectacle corrected visual acuity, manifest and cycloplegic refraction, ocular dominance, keratometry, applanation tonometry, scotopic pupillary size, tear film break up time, blinking rate, Schirmer test when necessary, pachymetry, slitlamp examination and computerized video keratography.
The scotopic spectral luminous efficiency V'([lambda]) is based on the rod photoreceptor responsivity of the eye.