Multiple sclerosis-associated retinal layer thinning predicts the severity of future relapses and the likelihood of disability.
In cognitively healthy people with a genetic risk for Alzheimer's, retinal changes have been associated with alterations in the entorhinal cortex, hippocampus, and lingual gyrus. Researchers say retinal changes can be used to track changes in brain structures associated with Alzheimer's in those with genetic risk factors.
The visual system adapts to the loss of photoreception by increasing sensitivity but simultaneously becomes deleteriously hyperactive. The findings could lead to new therapies to protect vision or reverse vision loss.
In mice, photoreceptor cells drive vision and non-vision functions using distinct circuits in the eye.
People who experience visual imagination have pupillary responses that optimize the amount of light hitting the retina and change in response to imagined items. This pupillary response does not occur in those with aphantasia.
A new type of neuron in the mammalian retina has been discovered. The new cell, named the Campana cell, appears to relay visual signals to both rod and cone photoreceptors in the retina, however, their precise purpose is not yet known.
Study reveals how evolution and natural selection have optimized the mammalian retina.