Under twenty-first-century metropolitan conditions, almost all of our vision is mediated by cones and the photopic system, yet cones make up barely 5% of our retinal photoreceptors. This paper looks ...

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 ...

Retinas from our earliest vertebrate ancestors had cone-like photoreceptors, presumably allowing them to see in daylight, but little ability to see at night. Then, millions of years ago in the ...

International research team may be beneficial for new treatments for patients suffering from loss of vision in bright light, report investigators. An international research team headed by Thomas Münch ...

The retinoid cycle, also called the visual cycle, is a complex system which replenishes the compounds that are needed for light to activate the receptors in the eye. This cycle was first described in ...