- Ingineeri.com
... Nerve fiber layer thickness can be evaluated with the "Fast RNFL Thickness" scan. This is a circular scan that requires the operator to place the circle so that the center of the circle is centered on the optic nerve head. ...
... Nerve fiber layer thickness can be evaluated with the "Fast RNFL Thickness" scan. This is a circular scan that requires the operator to place the circle so that the center of the circle is centered on the optic nerve head. ...
National Diabetes Retinal Screening Grading System and Referral
... reliably through effective screening programs, and that early intervention can prevent or help reduce loss of vision. For service funders and providers, the benefit is that such screening and treatment are cost-effective and, in the longer term, cost-saving. Now is the time to set up diabetes retina ...
... reliably through effective screening programs, and that early intervention can prevent or help reduce loss of vision. For service funders and providers, the benefit is that such screening and treatment are cost-effective and, in the longer term, cost-saving. Now is the time to set up diabetes retina ...
Afferent and efferent pathways in the visual system of the freshwater
... the right one (contrary to L. stagnalis), we revealed several quite large as well as some smaller neurons, whose axons jointly formed a bundle in the parietal neuropil. Axons of these cells ascended to the left cerebral ganglion where they joined the cerebral neuropil. Some axons passed along the n. ...
... the right one (contrary to L. stagnalis), we revealed several quite large as well as some smaller neurons, whose axons jointly formed a bundle in the parietal neuropil. Axons of these cells ascended to the left cerebral ganglion where they joined the cerebral neuropil. Some axons passed along the n. ...
Objective optical assessment of tear-film quality dynamics in normal
... METHODS: Dynamic recording of double-pass retinal images during unforced tear-film breakup was performed in eyes with mild dry-eye symptoms (study group) and in an asymptomatic control group. Series of consecutive retinal images were recorded every 0.5 seconds while the patient avoided blinking. Mea ...
... METHODS: Dynamic recording of double-pass retinal images during unforced tear-film breakup was performed in eyes with mild dry-eye symptoms (study group) and in an asymptomatic control group. Series of consecutive retinal images were recorded every 0.5 seconds while the patient avoided blinking. Mea ...
The extra-retinal motion aftereffect - School of Psychology
... stationary test dot at the end of 60s of vertical eye movement. The direction reported was opposite to the stimulus motion shown in the adaptation period, such that a nystagmus eye movement with upward slow-phase produced a downward MAE. Like Chaudhuri (1991b), most observers also reported that upwa ...
... stationary test dot at the end of 60s of vertical eye movement. The direction reported was opposite to the stimulus motion shown in the adaptation period, such that a nystagmus eye movement with upward slow-phase produced a downward MAE. Like Chaudhuri (1991b), most observers also reported that upwa ...
Transvitreal Subretinal Injection
... • Both methods have a surgeon and dosing assistant and are similar to the clinical methods ...
... • Both methods have a surgeon and dosing assistant and are similar to the clinical methods ...
Permeability of blood-ocular barriers of neonatal and adult
... progress to help understand this fascinating phenomenon. From the present NaFl and the preliminary morphologic data, it is apparent that the iris vessels of the cat may have a significant role in the formation of aqueous humor. A previous investigation brought forth that thought also. Sheie et al.12 ...
... progress to help understand this fascinating phenomenon. From the present NaFl and the preliminary morphologic data, it is apparent that the iris vessels of the cat may have a significant role in the formation of aqueous humor. A previous investigation brought forth that thought also. Sheie et al.12 ...
Blue laser autofluorescence
... (CNV), which develops between Bruch’s membrane, RPE and the photoreceptor layer. In studies, it has been shown that all types of CNV are associated with normal, increased, or decreased focal RPE autofluorescence.5,6 Thus RPE dysfunction has been shown to play a role in the pathogenesis of wet AMD. T ...
... (CNV), which develops between Bruch’s membrane, RPE and the photoreceptor layer. In studies, it has been shown that all types of CNV are associated with normal, increased, or decreased focal RPE autofluorescence.5,6 Thus RPE dysfunction has been shown to play a role in the pathogenesis of wet AMD. T ...
Visual evoked potentials with crossed asymmetry in
... obtained after the nature of the study was explained. Ten patients with a diagnosis of CSNB2, who already had been reported in a previous publication,1 were identified from a retrospective chart study.9 The diagnosis of CSNB2 was secured with electroretinographic investigations based on the followin ...
... obtained after the nature of the study was explained. Ten patients with a diagnosis of CSNB2, who already had been reported in a previous publication,1 were identified from a retrospective chart study.9 The diagnosis of CSNB2 was secured with electroretinographic investigations based on the followin ...
The eye of the crepuscular rodent rock cavy
... in PB solution. In three animals, one of the eyes was kept in the orbita in order to facilitate the dissection of the extraocular muscles. After that, the muscles were identified and photographed. In all other cases, when the perfusion was finished, the eyes were enucleated and the encephala removed ...
... in PB solution. In three animals, one of the eyes was kept in the orbita in order to facilitate the dissection of the extraocular muscles. After that, the muscles were identified and photographed. In all other cases, when the perfusion was finished, the eyes were enucleated and the encephala removed ...
Cortical representation of visual three-dimensional space
... where inputs originating from each eye are integrated. Left and right receptive fields of a binocular neuron may be in exact topographic correspondence in the two eyes or may have slightly disparate locations. Consequently, two identical stimuli falling in the same position in both receptive fields ...
... where inputs originating from each eye are integrated. Left and right receptive fields of a binocular neuron may be in exact topographic correspondence in the two eyes or may have slightly disparate locations. Consequently, two identical stimuli falling in the same position in both receptive fields ...
Retinal evaluation efficacy of a scanning laser ophthalmoscope
... Viewing the retina after best corrected acuities are determined can be time consuming without retinal health information. The capability of the P200 to provide images of the far periphery and central pole in one image has meant that the doctors at the White Rock Optometry Clinic can in most cases di ...
... Viewing the retina after best corrected acuities are determined can be time consuming without retinal health information. The capability of the P200 to provide images of the far periphery and central pole in one image has meant that the doctors at the White Rock Optometry Clinic can in most cases di ...
Impairment of Vision in a Mouse Model of Usher Syndrome Type III
... tients.1,2,15,16 In mouse, studies of different genetic backgrounds were instructive to understand the effect of modifiers on the age-dependent deterioration of vision. For example, effects of different genetic backgrounds were clearly illustrated by the study of retinitis pigmentosa 1 homolog (RP1h ...
... tients.1,2,15,16 In mouse, studies of different genetic backgrounds were instructive to understand the effect of modifiers on the age-dependent deterioration of vision. For example, effects of different genetic backgrounds were clearly illustrated by the study of retinitis pigmentosa 1 homolog (RP1h ...
A brushfire in the eye
... CMV retinitis is characterised by necrotic retinitis, which progresses over months from an acute to a chronic stage. Chronic inflammatory cells and both intranuclear and intracytoplasmic inclusion bodies are seen throughout the active margins of the lesions.4 With time, the cytoarchitecture of the f ...
... CMV retinitis is characterised by necrotic retinitis, which progresses over months from an acute to a chronic stage. Chronic inflammatory cells and both intranuclear and intracytoplasmic inclusion bodies are seen throughout the active margins of the lesions.4 With time, the cytoarchitecture of the f ...
Reproducibility of Nerve Fiber Layer Thickness Measurements by
... The OCT assesses retinal infrastructure by analyzing the temporal delay of back-scattered light, using low-coherence interferometry. The technology used by OCT is similar to ultrasonography, except that light rather than sound is used to perform the imaging. Low-coherence light is directed through a ...
... The OCT assesses retinal infrastructure by analyzing the temporal delay of back-scattered light, using low-coherence interferometry. The technology used by OCT is similar to ultrasonography, except that light rather than sound is used to perform the imaging. Low-coherence light is directed through a ...
DEVELOPMENT OF MESODERM,
... At the end of lecture students should be able to know, What is gastrulation. Development of mesoderm. Somitogenesis. Formation of cartilage. ...
... At the end of lecture students should be able to know, What is gastrulation. Development of mesoderm. Somitogenesis. Formation of cartilage. ...
Morgan, J.I.W., Dubra, A., Wolfe, R., Merigan, W.H., Williams, D.R.
... Despite the important role of the RPE in retinal health, little is known about the RPE cell mosaic structure, mainly because histologic studies on cell density and packing disagree.2–7 In addition, drug and molecular treatments for retinal diseases are advancing8 such that in vivo metrics must be de ...
... Despite the important role of the RPE in retinal health, little is known about the RPE cell mosaic structure, mainly because histologic studies on cell density and packing disagree.2–7 In addition, drug and molecular treatments for retinal diseases are advancing8 such that in vivo metrics must be de ...
Patterning the optic neuroepithelium by FGF signaling
... morphologically similar to neural retina, formed in place of the RPE (Fig. 1A). This ectopic neural retina will be referred to as RPE-derived neural retina (rNR). The same RPE phenotype was observed in mice heterozygous or homozygous for the transgene. Unlike the modified dorsal RPE, the ventral RPE ...
... morphologically similar to neural retina, formed in place of the RPE (Fig. 1A). This ectopic neural retina will be referred to as RPE-derived neural retina (rNR). The same RPE phenotype was observed in mice heterozygous or homozygous for the transgene. Unlike the modified dorsal RPE, the ventral RPE ...
Intra-arterial Chemotherapy for Retinoblastoma
... fluoroscopy in 3 cases. Concomitant central or branch retinal artery occlusion was noted (permanent in 2 cases, temporary in 1 case). Subtle retinal pigment epithelial mottling in 9 cases that slowly evolved to later-onset underlying choroidal atrophy in 5 cases was noted. Conclusions: Treatment wit ...
... fluoroscopy in 3 cases. Concomitant central or branch retinal artery occlusion was noted (permanent in 2 cases, temporary in 1 case). Subtle retinal pigment epithelial mottling in 9 cases that slowly evolved to later-onset underlying choroidal atrophy in 5 cases was noted. Conclusions: Treatment wit ...
Inning Chen - American Academy of Optometry
... dorzolamide 2% and timolol 0.5% BID was added to the medical regiment. When he returned 5 days later, the iris and angle neovascularization regressed and the IOP was in the low teens. During the next several months, the IOP remained low so the medications were discontinued. At the 1 year follow-up ...
... dorzolamide 2% and timolol 0.5% BID was added to the medical regiment. When he returned 5 days later, the iris and angle neovascularization regressed and the IOP was in the low teens. During the next several months, the IOP remained low so the medications were discontinued. At the 1 year follow-up ...
Microsaccadic eye movements and firing of single cells in the striate
... When viewing a stationary object, we unconsciously make small, involuntary eye movements or ‘microsaccades’. If displacements of the retinal image are prevented, the image quickly fades from perception. To understand how microsaccades sustain perception, we studied their relationship to the firing o ...
... When viewing a stationary object, we unconsciously make small, involuntary eye movements or ‘microsaccades’. If displacements of the retinal image are prevented, the image quickly fades from perception. To understand how microsaccades sustain perception, we studied their relationship to the firing o ...
Speed judgments of three-dimensional motion incorporate
... exploited when judging the sign of 3D motion. Here, we ask whether extraretinal signals also affect judgments of 3D speed. Observers judged the speed of a small target surrounded by a large background. To manipulate extraretinal information, we varied the vergence demand of the entire stimulus sinus ...
... exploited when judging the sign of 3D motion. Here, we ask whether extraretinal signals also affect judgments of 3D speed. Observers judged the speed of a small target surrounded by a large background. To manipulate extraretinal information, we varied the vergence demand of the entire stimulus sinus ...
Influence of Axial Length on Thickness Measurements Using
... Germany) were largely independent of axial length and had a refractive error between "8 and þ4 diopter (D).9 Most researchers reported that the change in OCT measurements for eyes with moderate ametropia is related linearly to axial length.11–16,29–31 Measures can be rescaled to match those of an em ...
... Germany) were largely independent of axial length and had a refractive error between "8 and þ4 diopter (D).9 Most researchers reported that the change in OCT measurements for eyes with moderate ametropia is related linearly to axial length.11–16,29–31 Measures can be rescaled to match those of an em ...
Neuropeptide Y-like immunoreactivity localizes to
... The ciliary ganglia in this study showed the same anatomic features and neural connections described previously for rhesus monkeys.20 Preganglionic parasympathetic nerves enter the ganglion at its attachment to the oculomotor nerve at the origin of the branch to the inferior oblique muscle. The gang ...
... The ciliary ganglia in this study showed the same anatomic features and neural connections described previously for rhesus monkeys.20 Preganglionic parasympathetic nerves enter the ganglion at its attachment to the oculomotor nerve at the origin of the branch to the inferior oblique muscle. The gang ...
Light-emitting diodes (LED) for domestic lighting: Any
... Light is an electromagnetic radiation visible by the intact adult human eye in the range of 380e780 nm, spanning from violet to red light. Like all radiations, light carries energy, the shorter wavelengths being the most energetic ones. Radiometric quantities define energy-related parameters of optic ...
... Light is an electromagnetic radiation visible by the intact adult human eye in the range of 380e780 nm, spanning from violet to red light. Like all radiations, light carries energy, the shorter wavelengths being the most energetic ones. Radiometric quantities define energy-related parameters of optic ...