Geng, Y., Greenberg, K.P., Wolfe, R., Gray, D.C., Hunter, J.J., Dubra
... (such as individual axons and dendrites) in rodent eyes. The resolution of in vivo imaging is limited by the optical quality of the rodent eye. Compared with the human eye, rodent eyes have smaller axial lengths, higher optical powers, larger average refractive errors, and larger numerical apertures ...
... (such as individual axons and dendrites) in rodent eyes. The resolution of in vivo imaging is limited by the optical quality of the rodent eye. Compared with the human eye, rodent eyes have smaller axial lengths, higher optical powers, larger average refractive errors, and larger numerical apertures ...
Special Senses
... the iris consists of a CT stroma with an uncovered anterior surface, not lined by an epithelium bordering the anterior chamber; the posterior pigmented epithelium blocks light entering the eye except through the pupil and separates the stroma from the posterior chamber, however the basal lamina face ...
... the iris consists of a CT stroma with an uncovered anterior surface, not lined by an epithelium bordering the anterior chamber; the posterior pigmented epithelium blocks light entering the eye except through the pupil and separates the stroma from the posterior chamber, however the basal lamina face ...
Lauscha, Germany: Historic Images
... In the past decade, researchers have discovered several types (6 types) of mammalian intrinsically specialized photosensitive retinal ganglion cells that secrete the photosensitive molecule, melanopsin, which influences mammalian circadian rhythms.25 It is suspected that these chemicals also influen ...
... In the past decade, researchers have discovered several types (6 types) of mammalian intrinsically specialized photosensitive retinal ganglion cells that secrete the photosensitive molecule, melanopsin, which influences mammalian circadian rhythms.25 It is suspected that these chemicals also influen ...
Branch Retinal Vein Occlusion
... branch retinal vein occlusions (BRVOs) often are grouped and studied together. The natural history and complication rate for each entity differ. The treatments and their results vary from one condition to the other. This article deals exclusively with BRVO. Hemiretinal vein occlusions are probably v ...
... branch retinal vein occlusions (BRVOs) often are grouped and studied together. The natural history and complication rate for each entity differ. The treatments and their results vary from one condition to the other. This article deals exclusively with BRVO. Hemiretinal vein occlusions are probably v ...
ARVO 2016 Annual Meeting Abstracts 466 Fixational eye movements
... Presentation Description: Vision depends on motion: we see things either because they move or because our eyes do. What may be more surprising is that large and miniature eye motions help us examine the world in similar ways–largely at the same time. In this presentation, I will discuss recent resea ...
... Presentation Description: Vision depends on motion: we see things either because they move or because our eyes do. What may be more surprising is that large and miniature eye motions help us examine the world in similar ways–largely at the same time. In this presentation, I will discuss recent resea ...
Electrodiagnosists (ERG) - All India Ophthalmological Society
... assessment of global ganglion cell function ...
... assessment of global ganglion cell function ...
Eyes and Ears - WordPress.com
... – Iris Colored part of the eye that shrinks and expands so the pupil can adjust to the incoming light ...
... – Iris Colored part of the eye that shrinks and expands so the pupil can adjust to the incoming light ...
Blue light hazard
... The fact that blue light is both beneficial and toxic raises a critical question: Can we protect the eye from harmful blue light without simultaneously denying it the physiologically necessary blue light? One way to accomplish this would be with a lens that selectively filters out the harmful wavele ...
... The fact that blue light is both beneficial and toxic raises a critical question: Can we protect the eye from harmful blue light without simultaneously denying it the physiologically necessary blue light? One way to accomplish this would be with a lens that selectively filters out the harmful wavele ...
PDF
... layer and closure of the choroid fissure margins (13-5 days, Plate 1, figs. D, E); and eye-cup at the time of complete closure of the choroid fissure (14-5 days, Plate 1, figs. F, G). These rudiments were implanted into the anterior chamber of an adult eye. The transplantations were carried out unde ...
... layer and closure of the choroid fissure margins (13-5 days, Plate 1, figs. D, E); and eye-cup at the time of complete closure of the choroid fissure (14-5 days, Plate 1, figs. F, G). These rudiments were implanted into the anterior chamber of an adult eye. The transplantations were carried out unde ...
What is sight… - Schepens Eye Research Institute
... research and commitment to giving hope to patients and their loved ones. He also understood the importance of sustaining and nurturing this passion for excellence as the Institute grew and passed the scientific gauntlet from one generation of scientists to the next. His founding principles and belie ...
... research and commitment to giving hope to patients and their loved ones. He also understood the importance of sustaining and nurturing this passion for excellence as the Institute grew and passed the scientific gauntlet from one generation of scientists to the next. His founding principles and belie ...
pdf
... The phthisis bulbi is an atrophic scar with disorganization of the eyeball, and is the sequela of a wide variety of pathologic ocular processes. Among the main causes of phthisis bulbi are trauma, infection and other inflammatory processes, chronic retinal detachment, radiation, persistent hyperplas ...
... The phthisis bulbi is an atrophic scar with disorganization of the eyeball, and is the sequela of a wide variety of pathologic ocular processes. Among the main causes of phthisis bulbi are trauma, infection and other inflammatory processes, chronic retinal detachment, radiation, persistent hyperplas ...
A SYNDROME OF EXTENSIVE PERIPAPILLARY MYELINATED
... The explanation for the occurrence of intraocular myelination is unknown. An error in process of myelination, or in the formation of the sclera, is hypothesized to be responsible for the myelin’s reaching the retina2.Oligodendrocytes responsible for myelination of the CNS, are not normally present i ...
... The explanation for the occurrence of intraocular myelination is unknown. An error in process of myelination, or in the formation of the sclera, is hypothesized to be responsible for the myelin’s reaching the retina2.Oligodendrocytes responsible for myelination of the CNS, are not normally present i ...
Session 267 Diabetic macular edema clinical and anti
... thickness (CRT). Most of these studies look at a single morphologic parameter. Our aim is to identify which of the evaluated 18 imaging biomarkers can predict VA when all are analyzed in one patient cohort and should therefore be used for automated ophthalmic image analysis. Methods: All 311 Spectra ...
... thickness (CRT). Most of these studies look at a single morphologic parameter. Our aim is to identify which of the evaluated 18 imaging biomarkers can predict VA when all are analyzed in one patient cohort and should therefore be used for automated ophthalmic image analysis. Methods: All 311 Spectra ...
Precision targeting with a tracking adaptive optics scanning laser
... conjugates to pivot the retinal scan from a stationary beam at the pupil. The entire resonant scanner is attached to a galvanometer. This configuration, where offsets can be applied to galvanometers along both axes of the raster, allows advanced scans to be created (e.g., 4-5-deg macular montage pi ...
... conjugates to pivot the retinal scan from a stationary beam at the pupil. The entire resonant scanner is attached to a galvanometer. This configuration, where offsets can be applied to galvanometers along both axes of the raster, allows advanced scans to be created (e.g., 4-5-deg macular montage pi ...
Noninvasive two-photon microscopy imaging of mouse retina and
... a slower acquisition rate for this image. Examination of TPM RPE images obtained during DM surface optimization did not indicate damage to RPE (Supplementary Video 2). ...
... a slower acquisition rate for this image. Examination of TPM RPE images obtained during DM surface optimization did not indicate damage to RPE (Supplementary Video 2). ...
Title: Is Systemic Infliximab Therapy Effective for Retinal Cavernous
... revealed the same highly reflective choroidal mass over the macular area measuring 2.5mm in elevation, 8x9.23mm in diameter (Figure 5). No complications related to infliximab use were noticed during follow-up. ...
... revealed the same highly reflective choroidal mass over the macular area measuring 2.5mm in elevation, 8x9.23mm in diameter (Figure 5). No complications related to infliximab use were noticed during follow-up. ...
Delivery strategies for treatment of age
... the posterior segment, wherein it reaches the retina, a photosensitive tissue possessing neural connections to the brain that enables processing of visual information (see Fig. 1). The inner wall of the posterior segment is composed of a wellorganized laminar structure of the photosensitive retinal ...
... the posterior segment, wherein it reaches the retina, a photosensitive tissue possessing neural connections to the brain that enables processing of visual information (see Fig. 1). The inner wall of the posterior segment is composed of a wellorganized laminar structure of the photosensitive retinal ...
Literature search on the Internet
... The current relative indications of plaque radiotherapy are: 1) selected small melanomas that are documented to be growing or that show clear-cut signs of activity on the first visit, 2) most medium-sized and some large choroidal and ciliary body melanomas in an eye with potential salvageable vision ...
... The current relative indications of plaque radiotherapy are: 1) selected small melanomas that are documented to be growing or that show clear-cut signs of activity on the first visit, 2) most medium-sized and some large choroidal and ciliary body melanomas in an eye with potential salvageable vision ...
a Free Preview of “The Aquatic Eye” Here
... ocean creatures that I was observing. I wondered, for example: Why is the lens of fishes so large and spherical compared to the lens of humans? Why is the pupil of fishes pear shaped? Why do some fishes have a shimmering cornea? The evolution of functional eyes was a huge factor in the explosion of ...
... ocean creatures that I was observing. I wondered, for example: Why is the lens of fishes so large and spherical compared to the lens of humans? Why is the pupil of fishes pear shaped? Why do some fishes have a shimmering cornea? The evolution of functional eyes was a huge factor in the explosion of ...
Objective methods of determining the patient`s refraction errors
... retina. The light moves through the front of the eye and is refracted there. The refracting power can be changed by different factors: 1. by the outside muscles, which can lead to a deformation of the whole eye ball, including the cornea/callosity, or 2. by the ciliary muscles changing the curvature ...
... retina. The light moves through the front of the eye and is refracted there. The refracting power can be changed by different factors: 1. by the outside muscles, which can lead to a deformation of the whole eye ball, including the cornea/callosity, or 2. by the ciliary muscles changing the curvature ...
Protective Effects of Morus albaLeaves Extract on Ocular Functions
... Phytotherapy is frequently considered to be less toxic and free from side effects than synthetic drugs. Hence, the present study was designed to investigate the protective use of crude water extract of Morus alba leaves on ocular functions including cataractogenesis, biochemical diabetic and hyperch ...
... Phytotherapy is frequently considered to be less toxic and free from side effects than synthetic drugs. Hence, the present study was designed to investigate the protective use of crude water extract of Morus alba leaves on ocular functions including cataractogenesis, biochemical diabetic and hyperch ...
The Macular Degeneration Epidemic
... wavelength light increases the risk of AMD. Developmentally, by early childhood, the cornea and crystalline lens of the eye effectively block ultraviolet light from reaching the retina1, 2. However visible light, which includes blue wavelength light, is transmitted to the retina and macula. The Beav ...
... wavelength light increases the risk of AMD. Developmentally, by early childhood, the cornea and crystalline lens of the eye effectively block ultraviolet light from reaching the retina1, 2. However visible light, which includes blue wavelength light, is transmitted to the retina and macula. The Beav ...
Innovative Treatment for Severe Ocular Trauma
... acuity of between 20/2000 and 20/50 and four recovered spontaneously to a visual acuity of 20/40 or better. However, among the 28 eyes in which a reconstruction was attempted, no eye had to be enucleated and no eye remained unable to perceive light. Twenty-one patients regained light perception and ...
... acuity of between 20/2000 and 20/50 and four recovered spontaneously to a visual acuity of 20/40 or better. However, among the 28 eyes in which a reconstruction was attempted, no eye had to be enucleated and no eye remained unable to perceive light. Twenty-one patients regained light perception and ...
Normal Fundus and Variations in the
... Dogs and cats have retinal blood vessels that traverse over the entire fundus. In the horse the blood vessels only emanate a short distance from the optic disc. In the dog and cat a distinct difference can be seen between the cilioretinal arteries and veins with the veins being larger in diameter an ...
... Dogs and cats have retinal blood vessels that traverse over the entire fundus. In the horse the blood vessels only emanate a short distance from the optic disc. In the dog and cat a distinct difference can be seen between the cilioretinal arteries and veins with the veins being larger in diameter an ...
PUPILLARY LIGHT REFLEX PATHWAY
... The pupil is round, regular shape and nearly equal in size. There may rarely be a physiological difference in pupil size (physiological anisocoria). Each pupil is located with its center a little below and slightly to the nasal side of the center of the cornea. The pupils are dilated in excitement, ...
... The pupil is round, regular shape and nearly equal in size. There may rarely be a physiological difference in pupil size (physiological anisocoria). Each pupil is located with its center a little below and slightly to the nasal side of the center of the cornea. The pupils are dilated in excitement, ...
Retina
The retina (/ˈrɛtɪnə/ RET-i-nə, pl. retinae, /ˈrɛtiniː/; from Latin rēte, meaning ""net"") is the third and inner coat of the eye which is a light-sensitive layer of tissue. The optics of the eye create an image of the visual world on the retina (through the cornea and lens), which serves much the same function as the film in a camera. Light striking the retina initiates a cascade of chemical and electrical events that ultimately trigger nerve impulses. These are sent to various visual centres of the brain through the fibres of the optic nerve.In vertebrate embryonic development, the retina and the optic nerve originate as outgrowths of the developing brain, so the retina is considered part of the central nervous system (CNS) and is actually brain tissue. It is the only part of the CNS that can be visualized non-invasively.The retina is a layered structure with several layers of neurons interconnected by synapses. The only neurons that are directly sensitive to light are the photoreceptor cells. These are mainly of two types: the rods and cones. Rods function mainly in dim light and provide black-and-white vision, while cones support daytime vision and the perception of colour. A third, much rarer type of photoreceptor, the intrinsically photosensitive ganglion cell, is important for reflexive responses to bright daylight.Neural signals from the rods and cones undergo processing by other neurons of the retina. The output takes the form of action potentials in retinal ganglion cells whose axons form the optic nerve. Several important features of visual perception can be traced to the retinal encoding and processing of light.