A study on ground squirrels shows, not only do mitochondria produce bioenergy in the cone-shaped photoreceptors in the retina of the eye, they also act as micro-lenses that redirect light to the ...

Gene therapy has partly restored the function of the retina’s cone receptors in two children who were born completely colourblind, reports a new study led by UCL researchers. The findings, published ...

Receptors for the messenger molecule serotonin can be modified in such a way that they can be activated by light, a study shows. An imbalance in serotonin levels seems to cause anxiety and depression.

Light-sensitive cells in the retina come in two main types: rods and cones. Rods are used for vision at low light and cones for color and bright light. A study in the September issue of the Journal of ...

Q: My colleague at work has a son who was born without color receptors in his eyes. How common is this? A: The normal eye has both cones and rods. The over 6 million cones in the eye function best in ...

Artificial retinal implants have the potential to restore some vision to people stricken by degenerative eye diseases, but the technology faces a range of daunting challenges—not least the difficulty ...

Figure 1: Targeted disruption of the Trβ2 exon. Figure 2: Expression of Trβ2 in eye development. Figure 3: Absence of M-cones and altered distribution of S-cones from Trβ2-deficient mice. Figure 4: ...

The first images ever made of retinas in living people reveal surprising variation from one person to the next. Yet somehow our perceptions don't vary as might be expected. Imaging thousands of cells ...

Light-sensitive cells in the retina come in two main types: rods and cones. Rods are used for vision at low light and cones for color and bright light. A study in the September issue of the Journal of ...