Diabetic Retinopathy - Stephen F. Austin State University
... The practitioners questioned the dramatic change in this patient’s vision. This case illustrates why you must conduct an objective analysis of a patient's underlying medical condition. Upon careful review of this case, several important findings were noted. The most important was the patient’s gluco ...
... The practitioners questioned the dramatic change in this patient’s vision. This case illustrates why you must conduct an objective analysis of a patient's underlying medical condition. Upon careful review of this case, several important findings were noted. The most important was the patient’s gluco ...
Glossary - west side eye surgery
... angle-closure – narrowing of the anterior chamber may force the iris to press against the back of the cornea, blocking the outflow of fluid through the eye’s drainage mechanism, the trabecular meshwork, causing an abrupt increase in eye pressure anterior chamber – the chamber of the eye bounded by t ...
... angle-closure – narrowing of the anterior chamber may force the iris to press against the back of the cornea, blocking the outflow of fluid through the eye’s drainage mechanism, the trabecular meshwork, causing an abrupt increase in eye pressure anterior chamber – the chamber of the eye bounded by t ...
Important Safety Instructions
... quickly be capable of assessing whether a person’s vision is within the normal parameters. Visual abnormalities will be revealed, often motivating action for a referral for further visual examination and possibly a much-needed visual correction. Consequently, that person’s quality of life can be enh ...
... quickly be capable of assessing whether a person’s vision is within the normal parameters. Visual abnormalities will be revealed, often motivating action for a referral for further visual examination and possibly a much-needed visual correction. Consequently, that person’s quality of life can be enh ...
Glaucoma and dry eye disease: the role of preservatives
... found in postmenopausal women, especially among those entering the postmenopausal period at earlier age.16-18 Low level of 17β-estradiol, a form of estrogen hormone, results in reduced level activity of nitric oxide (NO) synthase III enzyme and NO level in the endothelial cells. As the consequences, ...
... found in postmenopausal women, especially among those entering the postmenopausal period at earlier age.16-18 Low level of 17β-estradiol, a form of estrogen hormone, results in reduced level activity of nitric oxide (NO) synthase III enzyme and NO level in the endothelial cells. As the consequences, ...
Interictal Spikes Increase Cerebral Glucose Metabolism and Blood
... with spiking frequency. In this model, which produced a spiking rate of 12-22 spikes per minute, there was a significant correlation between hypermetabolism and spiking rate. This finding may also, in part, explain the frequent absence in PET studies of increased metabolism with interictal spiking. ...
... with spiking frequency. In this model, which produced a spiking rate of 12-22 spikes per minute, there was a significant correlation between hypermetabolism and spiking rate. This finding may also, in part, explain the frequent absence in PET studies of increased metabolism with interictal spiking. ...
Cranial nerve palsies in childhood
... the clinical presentation of cranial nerve paresis in childhood. In this brief review of cranial nerve paresis in childhood we highlight some of these differences. We previously reported our experience with IIIrd nerve palsy in children,2 a series of 18 children presenting under 15 years of age. The ...
... the clinical presentation of cranial nerve paresis in childhood. In this brief review of cranial nerve paresis in childhood we highlight some of these differences. We previously reported our experience with IIIrd nerve palsy in children,2 a series of 18 children presenting under 15 years of age. The ...
Visual Perception and Visual Dysfunction in Autism Spectrum
... influenced by sentence context when understanding homographs (“there was a tear in her eye” / “there was a tear in her dress”) than typically developing children13. However much of the research on cognitive styles in ASD has focussed on the domain of visuo-spatial perception. For example, it has be ...
... influenced by sentence context when understanding homographs (“there was a tear in her eye” / “there was a tear in her dress”) than typically developing children13. However much of the research on cognitive styles in ASD has focussed on the domain of visuo-spatial perception. For example, it has be ...
revised school vision screening procedures
... school age populations. By definition, screening is the process by which a large number of persons are tested by a fast, efficient method in order to separate them into different groups. The purpose of the vision screening test is to separate those children who probably have no vision problems from ...
... school age populations. By definition, screening is the process by which a large number of persons are tested by a fast, efficient method in order to separate them into different groups. The purpose of the vision screening test is to separate those children who probably have no vision problems from ...
Cataract Confusion Clarified
... Cataracts form when the water and electrolyte pumping systems fail to perform properly. Most cataracts in dogs are inherited and therefore, are seen in young patients. Other causes of cataract include: metabolic such as Diabetes mellitus, trauma, uveitis. Cataracts are classified based on age of ons ...
... Cataracts form when the water and electrolyte pumping systems fail to perform properly. Most cataracts in dogs are inherited and therefore, are seen in young patients. Other causes of cataract include: metabolic such as Diabetes mellitus, trauma, uveitis. Cataracts are classified based on age of ons ...
PDF - touchOPHTHALMOLOGY
... they would trade for perfect vision) and conjoint analysis47,49 (in which patients have to rank various attributes eg peripheral vision, darkness vision and glare in terms of which matter most to them). High frequencies of ceiling effects, which can lead to underestimating QoL changes, have been rep ...
... they would trade for perfect vision) and conjoint analysis47,49 (in which patients have to rank various attributes eg peripheral vision, darkness vision and glare in terms of which matter most to them). High frequencies of ceiling effects, which can lead to underestimating QoL changes, have been rep ...
PDF
... unaided vision, so can be perhaps compared somewhat to dispensing spectacles to improve visual acuity. To be fair, it should be noted that there is a potential bias arising from the fact that all members of this study had actively chosen to have refractive surgery, so can be assumed to have already ...
... unaided vision, so can be perhaps compared somewhat to dispensing spectacles to improve visual acuity. To be fair, it should be noted that there is a potential bias arising from the fact that all members of this study had actively chosen to have refractive surgery, so can be assumed to have already ...
Visual arguments and meta-arguments
... Putting together children’s toys can be an exercise in futility. In some cases I’ve ended up with leftover parts. In others, I’ve used every part but the darn thing still didn’t work properly because it seemed to need more nuts or bolts or random pieces of plastic or metal than were supplied. But of ...
... Putting together children’s toys can be an exercise in futility. In some cases I’ve ended up with leftover parts. In others, I’ve used every part but the darn thing still didn’t work properly because it seemed to need more nuts or bolts or random pieces of plastic or metal than were supplied. But of ...
Get cached
... Objective measurement of the myopic shift that occurs with the effort to focus at near due to alterations in crystalline lens surface curvatures or intraocular lens position, refractive indices or surface curvatures, has become of increased interest to better understand accommodation and attempts to ...
... Objective measurement of the myopic shift that occurs with the effort to focus at near due to alterations in crystalline lens surface curvatures or intraocular lens position, refractive indices or surface curvatures, has become of increased interest to better understand accommodation and attempts to ...
outline31107
... Conjugate, horizontal-torsional, increases with fixation attempt, progression from pendular to jerk, family history often positive, constant, conjugate, with or without associated sensory system deficits (e.g., alhinism, achromatopsia), associated strabismus or refractive error, decreases with conve ...
... Conjugate, horizontal-torsional, increases with fixation attempt, progression from pendular to jerk, family history often positive, constant, conjugate, with or without associated sensory system deficits (e.g., alhinism, achromatopsia), associated strabismus or refractive error, decreases with conve ...
ED Ophthalmology Guidelines
... Patients commonly present with white flashes of light in their temporal visual field in the affected eye. These are more obvious when it is dark. In the light they may complain of looking through a “veil” or a “cobweb” and there is often a new large floater that may be described as a spider or a rin ...
... Patients commonly present with white flashes of light in their temporal visual field in the affected eye. These are more obvious when it is dark. In the light they may complain of looking through a “veil” or a “cobweb” and there is often a new large floater that may be described as a spider or a rin ...
Patient Information
... clear fluid that flows in and out of the chamber with the purpose of nourishing the nearby tissue. As this fluid leaves the anterior chamber, reaching the open angel of the eye where the cornea and retina meet, the fluid is to pass through a spongy mesh-like filter. If the fluid passes through the m ...
... clear fluid that flows in and out of the chamber with the purpose of nourishing the nearby tissue. As this fluid leaves the anterior chamber, reaching the open angel of the eye where the cornea and retina meet, the fluid is to pass through a spongy mesh-like filter. If the fluid passes through the m ...
glaucomatous ocular hypertension - British Journal of Ophthalmology
... the macula without invading it. Scotomata of this kind are never positive, not being projected and remaining identical both for white and for colours. (c) Many writers have devoted special attention to the light and colour sense as affected by glaucoma, but the significance and value of changes in t ...
... the macula without invading it. Scotomata of this kind are never positive, not being projected and remaining identical both for white and for colours. (c) Many writers have devoted special attention to the light and colour sense as affected by glaucoma, but the significance and value of changes in t ...
stromal rejection episode after deep anterior lamellar keratoplasty
... was reported for keratoplasty. He had a history of eye rubbing and contact lens intolerance. He had never experienced episodes of either vernal conjunctivitis or herpes. Munson’s sign was obvious in the right eye. Visual acuity of his right eye was finger counting at four meters, and could not be im ...
... was reported for keratoplasty. He had a history of eye rubbing and contact lens intolerance. He had never experienced episodes of either vernal conjunctivitis or herpes. Munson’s sign was obvious in the right eye. Visual acuity of his right eye was finger counting at four meters, and could not be im ...
Glaucoma What is glaucoma? Glaucoma can happen in two basic
... Glaucoma is an eye disease that causes vision loss if left untreated. Glaucoma happens when fluid inside the eye does not drain properly. This increases pressure in the eye, called the intraocular pressure (IOP). The increased pressure can damage eyesight. You can’t feel high IOP, but it can be meas ...
... Glaucoma is an eye disease that causes vision loss if left untreated. Glaucoma happens when fluid inside the eye does not drain properly. This increases pressure in the eye, called the intraocular pressure (IOP). The increased pressure can damage eyesight. You can’t feel high IOP, but it can be meas ...
MINISTRY OF HEALTH GUIDELINES FOR EYE CARE
... experts to develop the Uganda Eye Care Guidelines. The taskforce undertook literature reviews and held stakeholder meetings to for input into the guidelines. The Eye Care Guidelines aim to provide easy to use, practical, complete and useful information on how to correctly diagnose and manage the sev ...
... experts to develop the Uganda Eye Care Guidelines. The taskforce undertook literature reviews and held stakeholder meetings to for input into the guidelines. The Eye Care Guidelines aim to provide easy to use, practical, complete and useful information on how to correctly diagnose and manage the sev ...
Nedivi Laboratory at MIT – Neuroscience Research at MIT
... Animal manipulations and tissue isolation. All animal work was approved by the Massachusetts Institute of Technology Committee on Animal C are; it conforms to National Institutes of Health guidelines for the use and care of vertebrate animals. Wistar–Kyoto rats (Taconic, Germantown, N Y) were housed ...
... Animal manipulations and tissue isolation. All animal work was approved by the Massachusetts Institute of Technology Committee on Animal C are; it conforms to National Institutes of Health guidelines for the use and care of vertebrate animals. Wistar–Kyoto rats (Taconic, Germantown, N Y) were housed ...
Potential hazards of viewing 3D stereoscopic
... The viewing of stereoscopic images produced on flat surfaces is far from new – Wheatstone stereoscopes5 were common in Victorian times – but there is little in the way of historical evidence to suggest that to do so will induce adverse health effects. In the 1940s and 1950s the technology became ava ...
... The viewing of stereoscopic images produced on flat surfaces is far from new – Wheatstone stereoscopes5 were common in Victorian times – but there is little in the way of historical evidence to suggest that to do so will induce adverse health effects. In the 1940s and 1950s the technology became ava ...
JOINT POLICY STATEMENT - American Academy of Ophthalmology
... head trauma, or stroke.4, 5 Diplopia can also develop in an adult who has had childhood strabismus. In children, strabismus is associated with suppression, in which an area of the visual field of the deviating eye is not recognized by the brain. This prevents diplopia in stable childhood-onset strab ...
... head trauma, or stroke.4, 5 Diplopia can also develop in an adult who has had childhood strabismus. In children, strabismus is associated with suppression, in which an area of the visual field of the deviating eye is not recognized by the brain. This prevents diplopia in stable childhood-onset strab ...
Visual impairment due to intracranial pressure
Spaceflight induced visual impairment is hypothesized to be a result of increased intracranial pressure. The study of visual changes and intracranial pressure (ICP) in astronauts on long-duration flights is a relatively recent topic of interest to Space Medicine professionals. Although reported signs and symptoms have not appeared to be severe enough to cause blindness in the near term, long term consequences of chronically elevated intracranial pressure is unknown.NASA has reported that fifteen long-duration male astronauts (45–55 years of age) have experienced confirmed visual and anatomical changes during or after long-duration flights. Optic disc edema, globe flattening, choroidal folds, hyperopic shifts and an increased intracranial pressure have been documented in these astronauts. Some individuals experienced transient changes post-flight while others have reported persistent changes with varying degrees of severity.Although the exact cause is not known at this time, it is suspected that microgravity-induced cephalad fluid shift and comparable physiological changes play a significant role in these changes. Other contributing factors may include pockets of increased CO2 and an increase in sodium intake. It seems unlikely that resistive or aerobic exercise are contributing factors, but they may be potential countermeasures to reduce intraocular pressure (IOP) or intracranial pressure (ICP) in-flight.