Traumatic Injuries of the Eye
... o Should be transparent VITREOUS o Should be able to see the fundus (otherwise there may be hemorrhage) o If there is hemorrhage, you will get a BLACK REFLEX instead of a red reflex RETINA o A detached retina is opalescent, and the blood columns are darker ...
... o Should be transparent VITREOUS o Should be able to see the fundus (otherwise there may be hemorrhage) o If there is hemorrhage, you will get a BLACK REFLEX instead of a red reflex RETINA o A detached retina is opalescent, and the blood columns are darker ...
Blind/Visually Impaired
... Print materials may need to be enlarged with high contrast Lighting will be a major factor in the student’s visual functioning Tasks requiring color vision may need to be adapted or modified Student may need extra time to complete visual tasks Students may need time to adjust to changes in lighting ...
... Print materials may need to be enlarged with high contrast Lighting will be a major factor in the student’s visual functioning Tasks requiring color vision may need to be adapted or modified Student may need extra time to complete visual tasks Students may need time to adjust to changes in lighting ...
see PDF poster here - UC Davis School of Veterinary Medicine
... Adequate production of tears to cover the outer surface of the cornea is essential to good ocular health. Tears supply nutrients, moisture and lubrication to the cornea, flush debris from the surface of the cornea, enhance vision and help to prevent infection. ...
... Adequate production of tears to cover the outer surface of the cornea is essential to good ocular health. Tears supply nutrients, moisture and lubrication to the cornea, flush debris from the surface of the cornea, enhance vision and help to prevent infection. ...
Diabetic Health Care - Cockrell Eyecare Center
... Diabetes is a prevalent, costly condition associated with substantial morbidity and mortality. Managing diabetes is complex and difficult from the patient's perspective as well as the physicians. Evidence exists that shows diabetic care is suboptimal in many patient populations across the US. Unfort ...
... Diabetes is a prevalent, costly condition associated with substantial morbidity and mortality. Managing diabetes is complex and difficult from the patient's perspective as well as the physicians. Evidence exists that shows diabetic care is suboptimal in many patient populations across the US. Unfort ...
Pupils and Near Vision
... Fibres travel via inferior division of III cranial nerve to ciliary ganglion via nerve to inferior oblique muscle. • Ciliary ganglion via short ciliary nerves to innervate sphincter pupillae muscle. ...
... Fibres travel via inferior division of III cranial nerve to ciliary ganglion via nerve to inferior oblique muscle. • Ciliary ganglion via short ciliary nerves to innervate sphincter pupillae muscle. ...
Cotton wool spots
... the retinal nerve fibre layer that represent areas of focal ischaemia and oedema. The retina has a high metabolic rate, and is highly susceptible to any disease process that restricts its arterial oxygen supply. There are many possible diseases that may manifest cotton wool spots, as shown in the ta ...
... the retinal nerve fibre layer that represent areas of focal ischaemia and oedema. The retina has a high metabolic rate, and is highly susceptible to any disease process that restricts its arterial oxygen supply. There are many possible diseases that may manifest cotton wool spots, as shown in the ta ...
special senses - eye and vision
... • Neural layer – sheet of nervous tissue • Contains three main types of neurons • Photoreceptor cells ...
... • Neural layer – sheet of nervous tissue • Contains three main types of neurons • Photoreceptor cells ...
Adaptive Optics - Delhi Journal of Ophthalmology
... with poorer post- operative visual acuity. The dark areas corresponded to lower foveal sensitivities and thinner inner and outer segments. Darker areas on AO were larger in eyes with pre- operative cuff of fluid. AOSLO was thus valuable even in eyes with good anatomical closure seen on SD-OCT. This ...
... with poorer post- operative visual acuity. The dark areas corresponded to lower foveal sensitivities and thinner inner and outer segments. Darker areas on AO were larger in eyes with pre- operative cuff of fluid. AOSLO was thus valuable even in eyes with good anatomical closure seen on SD-OCT. This ...
Ultrahigh resolution optical coherence tomography
... spherical mirrors also introduced additional static aberrations, mainly astigmatism and coma aberration. In the system, we combined both lenses and mirrors to achieve a compromise between optical quality and energy losses. The wavefront sensor was a commercially available (HASO 32 EYE) Hartmann-Shac ...
... spherical mirrors also introduced additional static aberrations, mainly astigmatism and coma aberration. In the system, we combined both lenses and mirrors to achieve a compromise between optical quality and energy losses. The wavefront sensor was a commercially available (HASO 32 EYE) Hartmann-Shac ...
outline29398
... superior nasal retina of his/her right eye and the superior temporal retina of his/her left eye. b. The image seen is inverted AND backwards. If you see a lesion and it does not appear in the center of the lens, move the optical system toward the area of the lens where you see the lesion. V. Scleral ...
... superior nasal retina of his/her right eye and the superior temporal retina of his/her left eye. b. The image seen is inverted AND backwards. If you see a lesion and it does not appear in the center of the lens, move the optical system toward the area of the lens where you see the lesion. V. Scleral ...
outline27918
... superior nasal retina of his/her right eye and the superior temporal retina of his/her left eye. b. The image seen is inverted AND backwards. If you see a lesion and it does not appear in the center of the lens, move the optical system toward the area of the lens where you see the lesion. V. Scleral ...
... superior nasal retina of his/her right eye and the superior temporal retina of his/her left eye. b. The image seen is inverted AND backwards. If you see a lesion and it does not appear in the center of the lens, move the optical system toward the area of the lens where you see the lesion. V. Scleral ...
common intraocular tumors - NSU College of Optometry
... are seen quite infrequently, but by the same token may be potentially sight or even lifethreatening. It is often difficult to know just by looking at a tumor if it is benign and selflimiting, or if it has the propensity to cause harm. This hour will acquaint the clinician with the most commonly enco ...
... are seen quite infrequently, but by the same token may be potentially sight or even lifethreatening. It is often difficult to know just by looking at a tumor if it is benign and selflimiting, or if it has the propensity to cause harm. This hour will acquaint the clinician with the most commonly enco ...
Roles of cell-extrinsic growth factors in vertebrate eye pattern
... of the CNS. The mature retina is organized as a laminar neural network composed of specialized sensory neurons, interneurons, and projection neurons, which together accomplish the tasks of image detection, processing, and transmission. The early retinal primordium is a pseudostratified neural epithe ...
... of the CNS. The mature retina is organized as a laminar neural network composed of specialized sensory neurons, interneurons, and projection neurons, which together accomplish the tasks of image detection, processing, and transmission. The early retinal primordium is a pseudostratified neural epithe ...
Immunohistochemical study of glutathione
... reported in the eye, the issue of which cells produce these proteins, where they are produced and at what levels is an important one. Glutathione reductase, an enzyme which recycles oxidized glutathione by transferring electrons from NADPH, was localized immunohistochemically in adult rat eye in thi ...
... reported in the eye, the issue of which cells produce these proteins, where they are produced and at what levels is an important one. Glutathione reductase, an enzyme which recycles oxidized glutathione by transferring electrons from NADPH, was localized immunohistochemically in adult rat eye in thi ...
Alcohol, Vision and Driving
... right amount of light must reach the retina. This is controlled by the pupil which acts like a camera shutter. The opaque iris (colored portion of the eye) closes the pupil opening (black area) so that on bright days the pupil is reduced to limit the amount of light entering the eye and thus protect ...
... right amount of light must reach the retina. This is controlled by the pupil which acts like a camera shutter. The opaque iris (colored portion of the eye) closes the pupil opening (black area) so that on bright days the pupil is reduced to limit the amount of light entering the eye and thus protect ...
view poster
... Granulocyte-colony-stimulating factor (G-CSF) is a powerful and specific growth factor for neutrophilic granulocytes. G-CSF is currently used clinically for the treatment of neutropenia. GCSF promotes the proliferation, survival, and maturation of cells committed to the neutrophilic granulocyte (NG) ...
... Granulocyte-colony-stimulating factor (G-CSF) is a powerful and specific growth factor for neutrophilic granulocytes. G-CSF is currently used clinically for the treatment of neutropenia. GCSF promotes the proliferation, survival, and maturation of cells committed to the neutrophilic granulocyte (NG) ...
Colobomas - The Retina Reference
... Colobomas can also affect the optic nerve. In one particular type, called a Morning Glory Anomaly, the optic disk has a large excavated funnel shape with an elevated rim of peripapillary tissue. The vessels emerge in a peculiar radiating pattern reminiscent of a flower. Genetic Implications of Colob ...
... Colobomas can also affect the optic nerve. In one particular type, called a Morning Glory Anomaly, the optic disk has a large excavated funnel shape with an elevated rim of peripapillary tissue. The vessels emerge in a peculiar radiating pattern reminiscent of a flower. Genetic Implications of Colob ...
First reported case of a true complex intraocular choristoma
... was increased compared to the fellow eye A conformer was placed in the socket and a lateral tarsorrhaphy was performed ...
... was increased compared to the fellow eye A conformer was placed in the socket and a lateral tarsorrhaphy was performed ...
Lab #8: The Special Senses
... where each ganglion cells receives signals from multiple cone cells (creating a larger receptive field for each ganglion cell), and even more so for light falling outside of the macula lutea, where each ganglion cell is stimulated by many individual rod cells (those that have high light sensitivity ...
... where each ganglion cells receives signals from multiple cone cells (creating a larger receptive field for each ganglion cell), and even more so for light falling outside of the macula lutea, where each ganglion cell is stimulated by many individual rod cells (those that have high light sensitivity ...
Analysis of progressive ophthalmic lesion in a patient with subacute
... R ESULTS . The patient showed no ophthalmic abnormalities until he developed a left homonymous hemianopia with sudden bilateral disturbed visual acuity. Severe progressive macular lesions including a pigment epithelial window defect by fluorescein angiography, a marked decrease in foveal thickness b ...
... R ESULTS . The patient showed no ophthalmic abnormalities until he developed a left homonymous hemianopia with sudden bilateral disturbed visual acuity. Severe progressive macular lesions including a pigment epithelial window defect by fluorescein angiography, a marked decrease in foveal thickness b ...
The Visual Cortex
... (retinal disparity) are interpreted as closer or further away from you. A population of cells in striate cortex combines the images from the 2 eyes in such a way that they respond to retinal disparity and thus signal the relative depth of objects. This system is very important for many animals such ...
... (retinal disparity) are interpreted as closer or further away from you. A population of cells in striate cortex combines the images from the 2 eyes in such a way that they respond to retinal disparity and thus signal the relative depth of objects. This system is very important for many animals such ...
The role of purines in photoreceptor death during
... Summary of project funded by Retina Australia. Title: The role of purines in photoreceptor death during retinal degeneration Investigator: Dr Erica Fletcher What did we do? The main focus of our work is to examine whether there are factors that exacerbate photoreceptor death during retinal degenerat ...
... Summary of project funded by Retina Australia. Title: The role of purines in photoreceptor death during retinal degeneration Investigator: Dr Erica Fletcher What did we do? The main focus of our work is to examine whether there are factors that exacerbate photoreceptor death during retinal degenerat ...
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.