Results 81 to 90 of about 3,657 (172)
The effects of a HEV‐filtering contact lens on the brightness of natural images
Ophthalmic and Physiological Optics, Volume 45, Issue 7, Page 1801-1810, November 2025.Abstract Purpose Yellow filters, including high‐energy‐visible (HEV) filtering lenses, have been thought to increase the subjective brightness of real‐world scenes, but laboratory results are mixed. This study used a brightness matching technique modified to present natural images using a broad spectrum of wavelengths: a visibly clear control contact ...
Billy R. Hammond +6 more
wiley +1 more source
Neuroscience, 2015 Neurons in the mammalian retina expressing the photopigment melanopsin have been identified as a class of intrinsically photosensitive retinal ganglion cells (ipRGCs). This discovery more than a decade ago has opened up an exciting new field of retinal research, and following the initial identification of photosensitive ganglion cells, several subtypes
Ren, C +4 more
openaire +4 more sources
The Effects of Food on Circadian Rhythm: A Comprehensive Review
eFood, Volume 6, Issue 5, October 2025.(a) Light signals are received by the retina and transmitted to the suprachiasmatic nucleus (SCN), the master circadian clock, which synchronizes peripheral clocks in metabolic tissues via neural and humoral pathways (e.g., cortisol). (b) The molecular clock is governed by a transcriptional‐translational feedback loop.
Jiazheng Hu +7 more
wiley +1 more source
Hyperpolarization-activated current (I(h)) in ganglion-cell photoreceptors.
PLoS ONE, 2010 Intrinsically photosensitive retinal ganglion cells (ipRGCs) express the photopigment melanopsin and serve as the primary retinal drivers of non-image-forming visual functions such as circadian photoentrainment, the pupillary light reflex, and ...
Matthew J Van Hook, David M Berson
doaj +1 more source
Loss of Melanopsin-Expressing Retinal Ganglion Cells in Severely Staged Glaucoma Patients
Investigative Opthalmology & Visual Science, 2016 Multiple studies have shown overwhelming evidence supporting the impairment of melanopsin function due to glaucoma. However, few studies have been carried out in humans analyzing the histology of melanopsin-expressing retinal ganglion cells (mRGCs) in retinas with glaucoma.
Obara, Elisabeth Anne +3 more
openaire +3 more sources
Unexpected diversity and photoperiod dependence of the zebrafish melanopsin system.
PLoS ONE, 2011 Animals have evolved specialized photoreceptors in the retina and in extraocular tissues that allow them to measure light changes in their environment.
Vanessa Matos-Cruz +5 more
doaj +1 more source
Melanopsin retinal ganglion cell loss and circadian dysfunction in Alzheimer's disease (Review)
Molecular Medicine Reports, 2016 Alzheimer's disease affects 27 million individuals and is the most common cause of dementia worldwide. The pathology of Alzheimer's disease is primarily due to the β‑amyloid deposits and neurofibrillary tangles. These deposits exist largely in the cerebral blood vessels, but have also been shown to exist in retinal vessels.
FENG, RUIQI +4 more
openaire +3 more sources
PLoS ONE, 2008 Rod/cone photoreceptors of the outer retina and the melanopsin-expressing retinal ganglion cells (mRGCs) of the inner retina mediate non-image forming visual responses including entrainment of the circadian clock to the ambient light, the pupillary light
Megumi Hatori +9 more
doaj +1 more source
β-Arrestin-dependent deactivation of mouse melanopsin.
PLoS ONE, 2014 In mammals, the expression of the unusual visual pigment, melanopsin, is restricted to a small subset of intrinsically photosensitive retinal ganglion cells (ipRGCs), whose signaling regulate numerous non-visual functions including sleep, circadian ...
Evan G Cameron, Phyllis R Robinson
doaj +1 more source
Impaired Circadian Photoentrainment in Opn5-Null Mice
iScience, 2018 Summary: The master circadian pacemaker in mammals resides in the hypothalamic suprachiasmatic nuclei (SCN) and is synchronized to ambient light/dark cycles (i.e., photoentrainment). Melanopsin (Opn4) and classical rod-cone photoreceptors are believed to
Wataru Ota +3 more
doaj +1 more source