Contents
What are the 10 layers of the retina?
Layers from outside in: (1) retinal pigment epithelium; (2) rods and cones (photoreceptors); (3) external limiting membrane; (4) outer nuclear layer; (5) outer plexiform layer; (6) inner nuclear layer; (7) inner plexiform layer; (8) ganglion cell layer; (9) nerve fiber layer; (10) inner limiting membrane; (11) vitreous.
What are the three layers of the retina?
The cellular layers of the retina are as follows: 1) The pigmented epithelium, which is adjacent to the choroid, absorbs light to reduce back reflection of light onto the retina, 2) the photoreceptor layer contains photosensitive outer segments of rods and cones, 3) the outer nuclear layer contains cell bodies of the …
What are the two layers of retina?
The two layers that comprise the retina are an outer pigmented layer called the pigment epithelium, which adheres to the choroid, and an inner layer of nerve tissue called the sensory (or neural) retina.
How many parts of the retina are there?
Broadly retina consists of two primary layers: an inner neurosensory retina and retinal pigment epithelium (RPE). Sensory retina develops from the inner layer of the neuroectoderm, whereas RPE is derived from the outer layer of the neuroectoderm.
Where is the retina thickest?
foveal rim
The retinal thickness shows greatest variations in the center. The retina is thinnest at the foveal floor (0.10, 0.150-0
What color is the retina?
Orange Glow The inside of the eye derives its orange color from a layer of pigment cells inside the retina. This layer of pigment—just one cell thick—absorbs light coming in and prevents it from scattering.
What is the most sensitive part of the retina?
macula
The most sensitive part of the retina is an area known as the macula, which is responsible for high-resolution images (mainly cone cells).
What is the outermost layer of the retina?
The center of the macula is called the fovea. The inner surface of the retina is adjacent to the vitreous of the eye. The outermost layer of the retina, the retinal pigment epithelium, is tightly attached to the choroid.
How many layers are there in the retina?
The 10 layers of retina starting from the vitreous chamber are the following: Inner limiting membrane – consists of the basement membrane and contains Müller cells. Nerve fibre layer (NFL) – axons of ganglion cells. Ganglion cell layer – nuclei of ganglion cells and some amacrine cells.
What makes up the outer nuclear layer of the retina?
The outer nuclear layer contains cell bodies of the rods and cones, the inner nuclear layer contains cell bodies of the bipolar, horizontal and amacrine cells and the ganglion cell layer contains cell bodies of ganglion cells and displaced amacrine cells. Dividing these nerve cell layers are two neuropils where synaptic contacts occur (Fig. 4).
What kind of cells make up the retina?
1 Photoreceptor cells. They are made up of two broad classes of cells: cones and rods . 2 Horizontal cells. It appears that there are two types of horizontal cells, each with a different shape, which combined offer information to all photoreceptor cells. 3 Amacrine cells. 4 Bipolar cells. 5 Ganglion cells. …
What are the layers of the retinal pigment epithelium?
Retinal pigment epithelium – This is a single layer of cells that provide essential nutrition and waste removal for the photoreceptor cells. Accumulation of waste can lead to AMD and Stargardt disease. Photorecptors – This is where the rods and cones are located that convert light into electrical signals.