dark adaptation
The effect of pre-adapting light intensity on dark adaptation in early age-related macular degeneration
... Participants attended the laboratory on two days. Baseline examinations were completed at the start of the first visit. These included patient history, logMAR visual acuity (ETDRS), central visual field screening (C-40, ...
23
Measurement of cone dark adaptation: a comparison of four psychophysical methods
... In summary, the performance of the Goldmann-Weekers adaptometer was compared to three computer based methods of measuring cone dark adaptation and the mean cone τ and CoR for each were reported. As expected ...
22
Determining Optimal Test Parameters for Assessing Dark Adaptation in People With Intermediate Age-Related Macular Degeneration
... A final limitation of this study related to the lack of grading for the presence or absence of subretinal drusenoid deposits (SDD). This means that the iAMD group is likely to have included a mixture of participants with ...
9
A novel device for assessing dark adaptation in field settings
... married women of reproductive age and school-aged children, respectively (Table 1). Technical specifications in this manuscript refer to the currently available PFDA model. This standardized, field-ready, and precisely ...
9
The influence of light/dark adaptation and lateral inhibition on phototaxic foraging. A hypothetical-animal study.
... and dark adaptation, so that the ON and OFF units can function satisfactorily over a wide range of background luminances, without the risk of saturation at higher luminance levels, and loss of precious ...
26
Occlusable corneas in toadfishes: light transmission, movement and ultrastruture of pigment during light and dark adaptation
... During dark-adaptation, the minimal pigment cover (37–42%) in both species of toadfish investigated here differs from that in T. steindachneri (15%). Despite these differences in the degree of coverage, the ...
14
Collaboration between NDH and KEA3 allows maximally efficient photosynthesis after a long dark adaptation
... Figure 4. ECS analysis of a set of genotypes including crr2-1 and kea3-1. Photosynthesis was induced by non-saturating light (110 µmol photons m –2 s –1 ) after overnight dark adaptation (A and B) and ...
39
Light and dark adaptation mechanisms in the compound eyes of Myrmecia ants that occupy discrete temporal niches
... the dark-adapted eye during the day, the primary pigment cell pupil does not open fully, having a diameter of ...of dark adaptation during the day ...the dark- adapted state ...
8
Dark adaptation in relation to choroidal thickness in healthy young subjects: a cross-sectional, observational study
... Limitations of the study included the lack of assess- ment of the final rod threshold. Hence, we cannot rule out the existence of an association between the final rod threshold and choroidal thickness. The choroidal ...
7
The Cockroach DCMD Neurone: I Lateral Inhibition and the Effects of Light and Dark adaptation
... The DCMD's response in light-adapted and dark-adapted eyes, as a function of stimulus intensity, a Normalized responses of two light-adapted animals O , • to a single 2° spot of light [r] ...
30
The Melanin Content of the Skin of Rana Temporaria Under Normal Conditions and after Prolonged Light and Dark Adaptation A Photometric Study
... 3, is the much greater density of the melanin solutions prepared from the dorsal skins of the animals which were kept on the black background.. The dorsal skin of such animals contains, [r] ...
24
CRALBP supports the mammalian retinal visual cycle and cone vision
... For dark-adaptation tests, preprogrammed protocols were used to precisely monitor the fast recovery of cone sensitivity during the first 12 minutes following an estimated 90% photobleaching of the visual ...
13
Adaptation in the Compound Eye and Interaction with Screening Pigment
... Light-adaptation and dark-adaptation processes: changes in the amplitude of the negative potential intensities given are of the adapting light stimulus... Amplitude changes during adapta[r] ...
10
Xenorhabdus luminescens (DNA hybridization group 5) from human clinical specimens
... The key reactions for recognizing this new organism are yellow pigment production, negative test for nitrate reduction to nitrite, weak bioluminescence 10 to 15 min of dark adaptation is[r] ...
7
Photoinhibition in common atlantic macroalgae measured on site in Gran Canaria
... algae on rocky substrates in the intertidal zone some- times above water at low tide. The optimal quantum yield was determined as about 0.65 after 30 min dark adaptation (Fig. 2A). When exposed to ...
10
Behavioural thresholds for diffuse illumination in the goldfish
... Most of the work has been done on a few species, primarily the goldfish, although dark adaptation and thresholds to monochromatic light were obtained for the cichlid fish Tilapia Tavolga[r] ...
8
Retinal Damage and Sensitivity Loss of a Light Sensitive Crustacean Compound Eye (Cirolana Borealis): Electron Microscopy and Electrophysiology
... The retinula cell cytoplasm of the Cirolana borealis eye after 4h of daylight exposure followed by 5 dayB of dark adaptation prior to fixation.. Note disrupted mitochondria asterisks and[r] ...
20
A multicentre phase III randomised controlled single masked clinical trial evaluating the cl inical e fficacy and safety o f light masks at p reventing dark a daptation in the tr eatment of ea rly diabetic macular oedema (CLEOPATRA): study protocol for a randomised controlled trial
... The exact pathogenesis of diabetic retinopathy and DMO is uncertain. The rationale for this study is that in- creased glucose is associated in various ways with a de- crease in oxygen supply to the retina, and an ...
10
Spectral Sensitivities of the Anterior Median Eyes of the Orb Web Spiders, Argiope Bruennichii and A Amoena
... The recovery process of the eye to a bright test light following illumination was very similar to the dark adaptation process of the anterior median eye of the jumping spider which is kn[r] ...
12
Neuronal Modulation of Photoreceptor Activity in the Bee Moth Galleria Mellonella
... When nicotinic acid is applied to the ganglion in concentrations of 1 x io~6 M in Ringer solution we find that not only is adaptation abolished but the dark-adapted response increases ma[r] ...
12