Retinal Collection

Rod and cone cells of the eye, SEM C014 / 4866
Rod and cone cells of the eye. Coloured scanning electron micrograph (SEM) of rod and cone cells in the retina of a mammalian eye

Rift Valley fever virus, TEM

The eye seen through a microscope, from Atlas of Ophthalmoscopy
CHT236313 The eye seen through a microscope, from Atlas of Ophthalmoscopy, published in Paris, 1870 (chromolitho) by Liebreich

Rod and cone cells of the eye, SEM C014 / 4864
Rod and cone cells of the eye. Coloured scanning electron micrograph (SEM) of rod and cone cells in the retina of a mammalian eye

Metarhodopsin molecule F006 / 9709
Metarhodopsin II molecule, molecular model. This is one of the intermediary breakdown products formed when light falls on the photoreceptor pigment rhodopsin

Retinal-producing oxygenase enzyme F006 / 9570
Retinal-producing oxygenase enzyme, molecular model. This enzyme plays a role in the production and metabolism of retinal and other apocarotenoids. Retinal is the chemical basis of vision in animals

Transducin protein beta-gamma complex F006 / 9514
Transducin protein beta-gamma complex. Molecular model of the beta-gamma dimer of the heterotrimeric G protein transducin

Rhodopsin molecule F006 / 9325
Rhodopsin molecule. Molecular model of the rhodopsin complex. Rhodopsin (also called visual purple) is a pigment found in the rod photoreceptor cells in the retina of the eye

Transducin protein beta-gamma complex. Molecular model of the beta-gamma dimer of the heterotrimeric G protein transducin

Evolution of the eye, artwork
Evolution of the eye, computer artwork. It is thought that the eye originated as a patch of light-sensitive cells (left) on the organisms surface

Retina of the eye, light micrograph C016 / 0528
Retina of the eye. Light micrograph of a section through the retina from a human eye. From top down: nerve fibres of the optic nerve and a blood vessel; several layers of neurons (nerve cells)

Bacteriorhodopsin protein. Molecular model showing the structure of bacteriorhodopsin (bR), a protein found in primitive micro-organisms known as Archaea. This protein acts as a proton pump

Rod and cone cells of the eye, SEM C014 / 4865
Rod and cone cells of the eye. Coloured scanning electron micrograph (SEM) of rod and cone cells in the retina of a mammalian eye

Eye anatomy, artwork C016 / 8742
Eye anatomy, artwork. The eye is seen in cutaway format from the side. Structures shown include the lens (light blue, lower left), its attachment points, the iris

Retinal rod cell, TEM C013 / 4805
Retinal rod cell. Transmission electron micrograph (TEM) of a section through a rod cell from the retina of an eye, showing the inner segment (bottom) filled with mitochondria (green)

Retinal rod cell, TEM C013 / 4804
Retinal rod cell. Transmission electron micrograph (TEM) of a section through a rod cell from the retina of an eye, showing the inner segment (bottom) filled with mitochondria (green)

Crayfish compound eye, light micrograph
Crayfish compound eye. Light micrograph of a longitudinal section through the compound eye (top) of a freshwater crayfish (Astacus astacus)

Embryonic stem cells. Computer-enhanced confocal light micrograph of dividing stem cells from the ventricular zone of the retina of a developing embryo

Healthy retina
Normal retina, ophthalmoscope image. The retina is the light-sensitive membrane that lines the back of the eye. Blood vessels (red) radiate out from the optic disc (yellow, left)

Retina, SEM
Retina. Coloured scanning electron micrograph (SEM) of a section through a freeze-fractured retina, showing the light-sensitive rods and cones and their associated neurones

Retina rod cells, SEM
Retina rod cells. Coloured scanning electron micrograph (SEM) of a freeze-fractured section through a retina, revealing the structure of its photoreceptors

Rod cells. Coloured scanning electron micrograph (SEM) of rod cells (green) in the retina of the eye. Rod cells are light-sensitive cells which respond to dim light

Biometric identification

Retinal degeneration. Ophthalmoscope view of the retina of a patients eye, showing disciform macular degeneration (yellow patch)

Macular degeneration, ophthalmoscope image. Numerous yellow drusen spots are seen on the retina, the light-sensitive membrane that lines the back of the eyeball

Optic nerve, light micrograph
Optic nerve. Coloured light micrograph of a section through the optic nerve. The optic nerve (bright pink) collects impulses from the light sensitive cells of the retina and relays them to the brain

Eye structure, light micrograph
Eye structure. Coloured light micrograph of a section through the inner surface of a human eye. This slice shows the vitreous humour (transparent liquid in the eye, top), the retina (pink)

Cell death. Computer-enhanced confocal light micrograph of cells in the retina of the eye undergoing programmed cell death (apoptosis)

Retina, light micrograph
Retina. Light micrograph of a section through the retina showing its 10 layers. Magnification: x250 when printed at 10 centimetres wide

Cryptochrome and rhodopsin pigments. Rhodopsin is a pigment found in the rod photoreceptor cells in the retina of the human eye, where it absorbs light falling on the retina

Retina blood vessel, SEM
Retina blood vessel. Coloured scanning electron micrograph (SEM) of a section through a blood vessel in the retina of an eye, showing the red blood cells (red)

Retina structure
Retinal structure, artwork. Light falling on the retina passes from top to bottom. At bottom is the choroid layer (red), which lines the inside of the eye

Retina blood vessels and nerve cells. Light micrograph showing the blood vessels and nerve cells in the retina of an eye. The retina is the light-sensitive membrane that lines the back of the eyeball

Bacteriorhodopsin, diagram
Bacteriorhodopsin. Diagram of the molecular structure of bacteriorhodopsin, a protein found in primitive micro-organisms known as Archaea

Bacteriorhodopsin, artwork
Bacteriorhodopsin. Artwork of the molecular structure of bacteriorhodopsin, a protein found in primitive micro-organisms known as Archaea

Human retina, 19th century artwork. Artwork from the 1886 ninth edition of Moses and Geology (Samuel Kinns, London). This book was originally published in 1882

Retina in glaucoma, artwork
Retina in glaucoma, computer artwork. This view is looking through the pupil (green ring) at the front of the eye, to the retina (orange) at the back of the eye

Sensory rhodopsin transducer molecule. Computer model showing the molecular structure of sensory rhodopsin transducer (SRT)

Gecko retina, SEM
Gecko retina. Coloured scanning electron micrograph (SEM) of an oblique freeze-fracture through the retina of a gecko (family Gekkonidae)

Vitamin A (retinal) molecule
Vitamin A. Molecular model of the retinal form of vitamin A. Retinal is one of three forms of vitamin A; the other two are retinol and retinoic acid

Rhodopsin protein molecule. Computer model of a molecule of the protein opsin that forms part of the rhodopsin complex. Rhodopsin is found in the rod photoreceptor cells in the retina of the human

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"Exploring the Intricacies of Retinal: Unveiling the Wonders of Vision" The retina, also known as the innermost layer of the eye, plays a vital role in our visual perception. Composed of specialized cells called rod and cone cells, it acts as a gateway for light to be transformed into electrical signals that are then transmitted to the brain. Through scanning electron microscopy (SEM), we can observe the intricate structure of these rod and cone cells (C014 / 4866). These microscopic wonders are responsible for different aspects of vision - rods excel in low-light conditions while cones enable color perception. Another fascinating aspect captured by SEM is the network of blood vessels within the retina. These delicate vessels ensure proper nourishment and oxygen supply to this essential sensory tissue (Retina blood vessels, SEM). Zooming further into retinal exploration, transmission electron microscopy (TEM) reveals intriguing details such as Rift Valley fever virus particles present within retinal tissues. This highlights how viruses can impact ocular health on a microscopic level (Rift Valley fever virus, TEM). Delving deeper into molecular structures involved in vision, we encounter rhodopsin protein molecules. Rhodopsin is an integral component found in rod cells that enables them to detect light stimuli efficiently (Rhodopsin protein molecule). Its interaction with light triggers a cascade leading to signal transduction processes crucial for sight. Microscopic examination using advanced techniques like TEM allows us to witness mesmerizing images showcasing various components involved in visual processing. From bacteriorhodopsin proteins associated with photosynthesis-like reactions (Bacteriorhodopsin protein) to metarhodopsin molecules contributing to phototransduction pathways (F006 / 9709), each element unravels new insights about our remarkable sense of sight.