PERKINS TONOMETER Instructions For Use (IFU) Quick Guide
... Place a fluorescein paper strip near the external canthus in the lower conjunctival sac. After a few seconds the lacrimal fluid is sufficiently coloured and the paper can be removed. ...
... Place a fluorescein paper strip near the external canthus in the lower conjunctival sac. After a few seconds the lacrimal fluid is sufficiently coloured and the paper can be removed. ...
2012 Policy Statement on Adult Strabismus
... myasthenia gravis, brain tumor, 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 ...
... myasthenia gravis, brain tumor, 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 ...
healthy eyes healthy people - Texas Optometric Association
... aged 17 years/younger. Project Goal – To stress the importance of comprehensive visual evaluations for all children entering school. Project Activities - In Illinois, most school districts have vision screenings in place for school aged children. Sadly, only 30 percent of children who need intervent ...
... aged 17 years/younger. Project Goal – To stress the importance of comprehensive visual evaluations for all children entering school. Project Activities - In Illinois, most school districts have vision screenings in place for school aged children. Sadly, only 30 percent of children who need intervent ...
Undercorrection of myopia enhances rather than
... human myopia is an inappropriate response to a signal, which would better result in a growth response in the hypermetropic direction. If the mechanism is merely showing a zeroing error then undercorrecting myopia should slow down or halt the progression of eye growth. There is little reliable inform ...
... human myopia is an inappropriate response to a signal, which would better result in a growth response in the hypermetropic direction. If the mechanism is merely showing a zeroing error then undercorrecting myopia should slow down or halt the progression of eye growth. There is little reliable inform ...
Experimental Simulation of Simultaneous Vision
... subject’s pupil size to 4 mm. Visual stimuli were presented on a gammacorrected CRT monitor (Mitsubishi Diamond Pro 2070; Mitsubishi Electric, Rydalmere, Australia) located 4.5 m from the conjugated pupil plane and controlled by a VSG card (Cambridge Research Systems, Rochester, UK). The mean lumina ...
... subject’s pupil size to 4 mm. Visual stimuli were presented on a gammacorrected CRT monitor (Mitsubishi Diamond Pro 2070; Mitsubishi Electric, Rydalmere, Australia) located 4.5 m from the conjugated pupil plane and controlled by a VSG card (Cambridge Research Systems, Rochester, UK). The mean lumina ...
Pattern of ocular injury in Pediatric Population in western India
... Children are not aware of the consequences of eye injury and often report the injury after substantial damage has already occurred. This leads to delayed medical and surgical intervention and ultimately poor visual outcome. Identifying the cause of injuries among children may help in determining the ...
... Children are not aware of the consequences of eye injury and often report the injury after substantial damage has already occurred. This leads to delayed medical and surgical intervention and ultimately poor visual outcome. Identifying the cause of injuries among children may help in determining the ...
Binocular Diplopia
... The second step of the examination includes tests of ocular alignment. At times, a patient experiencing binocular diplopia may appear to have full ocular motility with no impairment of eye movements. This is particularly common with very small ocular deviations and with congenital ocular misalignmen ...
... The second step of the examination includes tests of ocular alignment. At times, a patient experiencing binocular diplopia may appear to have full ocular motility with no impairment of eye movements. This is particularly common with very small ocular deviations and with congenital ocular misalignmen ...
painful fourth cranial nerve palsy caused
... carotid–cavernous sinus fistulas. DCCF consists of a communication between the cavernous sinus and one or more meningeal branches of the internal carotid artery or external carotid artery. These fistulas usually have low arterial flow and develop spontaneously [1]. Although DCCF should be included i ...
... carotid–cavernous sinus fistulas. DCCF consists of a communication between the cavernous sinus and one or more meningeal branches of the internal carotid artery or external carotid artery. These fistulas usually have low arterial flow and develop spontaneously [1]. Although DCCF should be included i ...
Administration of eye preparations
... damage to the optic nerve which may result in blindness. The rise in pressure is almost always due to reduced outflow of aqueous humour, the inflow remaining constant. The most common condition is chronic open-angle glaucoma (chronic simple glaucoma) in which the intra-ocular pressure increases grad ...
... damage to the optic nerve which may result in blindness. The rise in pressure is almost always due to reduced outflow of aqueous humour, the inflow remaining constant. The most common condition is chronic open-angle glaucoma (chronic simple glaucoma) in which the intra-ocular pressure increases grad ...
Optometric management of posterior segment eye disease
... characterised by an accumulation of a lipofuscin-like material within the retinal pigment epithelial cells of the macula. Symptoms tend to develop in early childhood. There are five clinical stages in disease progression - the first stage is preclinical where patients show no abnormality. However, t ...
... characterised by an accumulation of a lipofuscin-like material within the retinal pigment epithelial cells of the macula. Symptoms tend to develop in early childhood. There are five clinical stages in disease progression - the first stage is preclinical where patients show no abnormality. However, t ...
acute posterior multifocal placoid pigment epitheliopathy following
... rheumatologic conditions [10], raised the need for specific investigations in order to elucidate the diagnosis, to identify associated pathological conditions and to lead towards appropriate therapy management. Moreover, Darugar et al. published a case of sarcoidosis with APMPPE as initial manifesta ...
... rheumatologic conditions [10], raised the need for specific investigations in order to elucidate the diagnosis, to identify associated pathological conditions and to lead towards appropriate therapy management. Moreover, Darugar et al. published a case of sarcoidosis with APMPPE as initial manifesta ...
entra-ocular hydatid cyst - British Journal of Ophthalmology
... have been considered by Duke-Elder (1940) and Sverdlick (1961) to be lacking authenticity. Scholtz (1906) could not carry out any histopathological or cytological studies to confirm his clinical diagnosis since the disease had occurred in the only eye in his case. The present case adds one more to t ...
... have been considered by Duke-Elder (1940) and Sverdlick (1961) to be lacking authenticity. Scholtz (1906) could not carry out any histopathological or cytological studies to confirm his clinical diagnosis since the disease had occurred in the only eye in his case. The present case adds one more to t ...
Boomers and Disease Detection with OCT
... Unexplained decreased vision Drusen / AMD Numerous maculopathies and retinopathies And Many Others ...
... Unexplained decreased vision Drusen / AMD Numerous maculopathies and retinopathies And Many Others ...
Operant control of human eye movements
... In most visual situations the perceived motion and the physical motion of the target’s retinal image are the same, and conventional models of pursuit typically assume that the raw retinal-image motion is the driving stimulus for pursuit. However, experiments using complex stimuli have demonstrated t ...
... In most visual situations the perceived motion and the physical motion of the target’s retinal image are the same, and conventional models of pursuit typically assume that the raw retinal-image motion is the driving stimulus for pursuit. However, experiments using complex stimuli have demonstrated t ...
Amblyopia and Strabismus
... RESULTS: The age of patients ranged 5-9 y and the hyperopic error range was +3.5 D to +6.75 D, with anisometropia 2 D or less. No patient had decreased best corrected visual acuity or loss of fusion ability. The postoperative refractive error ranged from -0.75 D to +1.5 D at the end of the study per ...
... RESULTS: The age of patients ranged 5-9 y and the hyperopic error range was +3.5 D to +6.75 D, with anisometropia 2 D or less. No patient had decreased best corrected visual acuity or loss of fusion ability. The postoperative refractive error ranged from -0.75 D to +1.5 D at the end of the study per ...
Amiodarone Induced Ocular Toxicity
... Amiodarone is a benzofuran derivative that has been effective for the treatment of both supraventricular and ventricular tachyarrhythmias. Due to ocular, dermatologic, gastrointestinal, neurologic, cardiovascular, thyroid and ...
... Amiodarone is a benzofuran derivative that has been effective for the treatment of both supraventricular and ventricular tachyarrhythmias. Due to ocular, dermatologic, gastrointestinal, neurologic, cardiovascular, thyroid and ...
Ophthalmology Referral Guidelines
... form. Cataracts usually develop gradually, and are not generally associated with pain, eye redness or other acute symptoms unless they are extremely advanced. Rapid and/or painful changes in vision are suspicious for other eye diseases and should be referred for specialist opinion. ...
... form. Cataracts usually develop gradually, and are not generally associated with pain, eye redness or other acute symptoms unless they are extremely advanced. Rapid and/or painful changes in vision are suspicious for other eye diseases and should be referred for specialist opinion. ...
Orbital cellulitis - DigitalCommons@UNMC
... chcmges are in favor of sinus thrombosis accord1-tlp.; to Uhlhoff although they may occur in orbital cellulitis. Coupland (1) mentions an important sign in cavernous sinus caS8S, ...
... chcmges are in favor of sinus thrombosis accord1-tlp.; to Uhlhoff although they may occur in orbital cellulitis. Coupland (1) mentions an important sign in cavernous sinus caS8S, ...
The continuous and quantitative observation of permeability
... the inflammation that resulted from the trauma of injection, an intravenous challenge of antigen caused a moderate and easily standardized inflammation in eyes which had received antibody at an earlier time. As an indicator, we used FITC-RSA. Although fluorescein sodium itself passes through the blo ...
... the inflammation that resulted from the trauma of injection, an intravenous challenge of antigen caused a moderate and easily standardized inflammation in eyes which had received antibody at an earlier time. As an indicator, we used FITC-RSA. Although fluorescein sodium itself passes through the blo ...
Ultra-Wide–Field Green-Light (532-nm) Autofluorescence Imaging in
... Eight eyes also demonstrated focal spots of increased autofluorescence signal, but the morphology of these lesions was more variable, with spots varying in both size and brightness. Some foci of increased autofluorescence signal did not correlate to any fundus findings seen on pseudo-color imaging ( ...
... Eight eyes also demonstrated focal spots of increased autofluorescence signal, but the morphology of these lesions was more variable, with spots varying in both size and brightness. Some foci of increased autofluorescence signal did not correlate to any fundus findings seen on pseudo-color imaging ( ...
Traffic Injury Prevention Vision and Night Driving Abilities of Elderly
... accommodative power to focus on near objects, also known as presbyopia. Another aging or disease-related process is the opacification of the normally clear lens (Michael and Bron 2011), or cataract. As a result, increased light scattering leads to a reduction in the retinal image contrast (de Waard ...
... accommodative power to focus on near objects, also known as presbyopia. Another aging or disease-related process is the opacification of the normally clear lens (Michael and Bron 2011), or cataract. As a result, increased light scattering leads to a reduction in the retinal image contrast (de Waard ...
Bilateral electric cataracts: Clinicopathologic report
... A 21-year-old man with a history of electrical shock was referred because of loss of vision. Approximately 3 years earlier, he sustained a shock from a high-voltage (10 000 volts) alternating current power line cable that led to loss of consciousness for approximately half an hour. On presentation, ...
... A 21-year-old man with a history of electrical shock was referred because of loss of vision. Approximately 3 years earlier, he sustained a shock from a high-voltage (10 000 volts) alternating current power line cable that led to loss of consciousness for approximately half an hour. On presentation, ...
Ewing Sarcoma of Orbit with Intracranial Extension
... Fig. 3: CT scan axial view at the level of orbit. ...
... Fig. 3: CT scan axial view at the level of orbit. ...
Eyes on the Future Ireland 2008: A study into the prevalence of
... Of this total figure approximately two-thirds of people meet the criteria of being legally blind, while the remaining third do not. This second group, while not being legally blind, do have significantly low vision and have been referred to NCBI by health care professionals so that they can benefit ...
... Of this total figure approximately two-thirds of people meet the criteria of being legally blind, while the remaining third do not. This second group, while not being legally blind, do have significantly low vision and have been referred to NCBI by health care professionals so that they can benefit ...
The continuous and quantitative observation of permeability
... the inflammation that resulted from the trauma of injection, an intravenous challenge of antigen caused a moderate and easily standardized inflammation in eyes which had received antibody at an earlier time. As an indicator, we used FITC-RSA. Although fluorescein sodium itself passes through the blo ...
... the inflammation that resulted from the trauma of injection, an intravenous challenge of antigen caused a moderate and easily standardized inflammation in eyes which had received antibody at an earlier time. As an indicator, we used FITC-RSA. Although fluorescein sodium itself passes through the blo ...
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.