layer of rods and cones

(redirected from Photoreceptor layer)


a thin, flat plate or stratum of a composite structure; called also lamina.
ameloblastic layer the inner layer of cells of the enamel organ, which forms the enamel prisms of the teeth.
abrasion layer a protective covering of gelatin enclosing an emulsion on x-ray film; called also overcoat.
bacillary layer layer of rods and cones.
basal layer of endometrium the deepest layer of the uterine endometrium; it provides the regenerative endometrium after menstrual loss of the functional layer.
basal layer of epidermis stratum basale.
blastodermic layer germ layer.
clear layer stratum lucidum.
columnar layer mantle layer.
compact layer of endometrium a sublayer of the functional layer of endometrium, which faces the lumen of the uterus and contains the necks of the uterine glands.
enamel layer the outermost layer of cells of the enamel organ.
functional layer of endometrium the layer of endometrium facing the lumen of the uterus; its cells are cast off at menstruation and childbirth. Sublayers are the compact layer and the spongy layer. It is known as the decidua during pregnancy.
ganglionic layer of cerebellum the thin middle gray layer of the cortex of the cerebellum, consisting of a single layer of Purkinje cells.
germ layer (germ cell layer) any of the three primary layers of cells formed in the early development of the embryo (ectoderm, entoderm, and mesoderm), from which the organs and tissues develop.
germinative layer stratum germinativum.
granular layer
2. the deep layer of the cortex of the cerebellum.
3. the layer of follicle cells lining the theca of the vesicular ovarian follicle.
half-value layer the thickness of a given substance which, when introduced in the path of a given beam of rays, will reduce its intensity by one half.
Henle's layer the outermost layer of the inner root sheath of the hair follicle.
horny layer
2. the outer, compact layer of the nail.
malpighian layer stratum germinativum.
mantle layer the middle layer of the wall of the primordial neural tube, containing primordial nerve cells and later forming the gray matter of the central nervous system.
nervous layer all of the retina except the pigment layer; the inner layer of the optic cup.
odontoblastic layer the epithelioid layer of odontoblasts in contact with the dentin of teeth.
Ollier's layer the innermost layer of the periosteum.
prickle-cell layer stratum spinosum.
layer of rods and cones the layer of the nervous part of the retina, located between the pigmented part and the external limiting membrane, containing the sensory elements, the rods and cones.
spinous layer stratum spinosum.
spongy layer of endometrium a sublayer of the functional layer of endometrium, underlying the compact layer and containing the tortuous portions of the uterine glands.
subendocardial layer the layer of loose fibrous tissue uniting the endocardium and myocardium.
subepicardial layer the layer of loose connective tissue uniting the epicardium and myocardium.
zonal layer of thalamus a layer of myelinated fibers covering the dorsal surface of the thalamus.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

lay·er of rods and cones

the layer of the retina next to the pigment layer and containing the visual receptors.
See also: retina, neuroepithelial layer of retina.
Synonym(s): bacillary layer
Farlex Partner Medical Dictionary © Farlex 2012

layer of rods and cones

The layer of the retina of the eye next to the pigment layer. It contains the rods and cones.
See also: layer
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
The photoreceptor layer and ellipsoid zone assumed a more regular structural appearance in areas of the transition zone where OpRegen was administered, suggesting potential structural restoration of the retina in areas receiving the RPE cells.
In addition, the progenitor cells have been shown to mature into functional photoreceptors that engraft into the photoreceptor layer, bringing the possibility of restored vision.
Photoreceptor layer thinning over drusen in eyes with age-related macular degeneration imaged in vivo with spectral-domain optical coherence tomography.
Photoreceptor precursor cells derived from embryonic stem cells can be transplanted in adult mouse models of retinal degeneration that still have dysfunctional photoreceptor layer (or outer nuclear layer).
Macular hole (MH) is defined as full-thickness tissue loss in the central macula, including the internal limiting membrane (ILM) and photoreceptor layer. Though 80% of cases are idiopathic, MH is known to be one of the anomalies that arises during the development of posterior vitreous detachment (PVD).
Caption: Figure 6: Photoreceptor layer size, rhodopsin labeling intensity, and ONL thickness.
Raveraet al., "Thefoveal photoreceptor layer and visual acuity loss in central serous chorioretinopathy," American Journal of Ophthalmology, vol.
The association of [OSL.sub.R] and VA is consistent with a previous study that reported reduced reflectance of the photoreceptor layer when cystoid spaces were present in the OPL [30] and other studies that showed a correlation between the continuity of the photoreceptor inner and outer segment (ellipsoid) and VA [7,19-21, 31,32].
The posterior layer, the retinal pigment epithelium (RPE), plays an important role in protection (excess light absorption, phagocytosis, water and ion transport) and support (growth factor section, nutrient transport) of the photoreceptor layer [13, 14].
Melatonin modulates the expression of retinal genes, that is, PER1, PER2, and BMAL1, responsible for controlling circadian rhythms in this tissue, as well as the genes regulating their expression: DBP, NAMPT, and c-FOS were rhythmically modulated in the mouse retina and in the photoreceptor layer [59].
Kita et al., "Integrity of foveal photoreceptor layer in central retinal vein occlusion," Retina, vol.
showed that the photoreceptor layer status is closely associated with final visual acuity in DME and that photoreceptor integrity prior to treatment can be predictive of potential visual recovery in DME [23].