11. Nystagmus and other ocular motor . oscillations
... from consideration the 8 patients whose vision was better than 20/100 in at least one eye (these could hardly be called blind patients), of the remaining 32, only 8 had normal foveas. Thus, the thesis that these patients were 'blind from congenital nystagmus' is difficult to defend. It seems much mo ...
... from consideration the 8 patients whose vision was better than 20/100 in at least one eye (these could hardly be called blind patients), of the remaining 32, only 8 had normal foveas. Thus, the thesis that these patients were 'blind from congenital nystagmus' is difficult to defend. It seems much mo ...
Alphabet Patterns and Oblique Muscle Dysfunctions
... An X-pattern occurs when there is divergence in upgaze and divergence in downgaze, which can occur without a specific cause. Patients with long-standing large-angle exotropia will frequently show an X-pattern, presumably caused by a tight contracted lateral rectus muscle. As the eye adducts against t ...
... An X-pattern occurs when there is divergence in upgaze and divergence in downgaze, which can occur without a specific cause. Patients with long-standing large-angle exotropia will frequently show an X-pattern, presumably caused by a tight contracted lateral rectus muscle. As the eye adducts against t ...
Sunday, May 3, 11:15 AM - 1:00 PM Hall B/C Poster Session
... we analyzed a 1.5T MRI, done with the Gadolinium based contrast agent Dotarem®, that was obtained in a tumor patient for evaluation of his underlying disease. 3rd, the resulting images were compared to those of a living control (1.5 T) whose oculodynamic MRI movies we presented last year. To enhance ...
... we analyzed a 1.5T MRI, done with the Gadolinium based contrast agent Dotarem®, that was obtained in a tumor patient for evaluation of his underlying disease. 3rd, the resulting images were compared to those of a living control (1.5 T) whose oculodynamic MRI movies we presented last year. To enhance ...
Gaze Control in Humans: Eye-Head Coordination - Research
... Current evidence shows that saccadic eye and head movements may be initiated at quite different times relative to one another (2,6, 16, 19,46,47). Relative onset times are influenced principally by the eccentricity of the target, the predictability of its onset, and other factors such as the subject ...
... Current evidence shows that saccadic eye and head movements may be initiated at quite different times relative to one another (2,6, 16, 19,46,47). Relative onset times are influenced principally by the eccentricity of the target, the predictability of its onset, and other factors such as the subject ...
Hyperopia - American Optometric Association
... comparison with physiologic hyperopia and may have a genetic inheritance pattern.22, 23 Because of the relationship of pathologic hyperopia to potentially serious ocular and systemic disorders, proper diagnosis and treatment of the underlying cause may prove critical to the patient's overall health. ...
... comparison with physiologic hyperopia and may have a genetic inheritance pattern.22, 23 Because of the relationship of pathologic hyperopia to potentially serious ocular and systemic disorders, proper diagnosis and treatment of the underlying cause may prove critical to the patient's overall health. ...
What is Albinism? - Under the Same Sun
... Albinism only affecting the eyes. This is called Ocular albinism (OA), and is much less common. Most cases are recorded in males. Children with OA may have skin and hair colour that are normal but slightly lighter than those of other family members. Albinism affecting the skin, hair and eyes. This i ...
... Albinism only affecting the eyes. This is called Ocular albinism (OA), and is much less common. Most cases are recorded in males. Children with OA may have skin and hair colour that are normal but slightly lighter than those of other family members. Albinism affecting the skin, hair and eyes. This i ...
Proprioceptive and Retinal Afference Modify Postsaccadic Ocular Drift
... The position of each eye was calibrated with a third-order polynomial linearization program to compensate for any nonlinearities in the search coil signal. The amplitude of the saccadic pulse was determined by subtracting the eye position at the end of the pulse (p), defined as the position at which ...
... The position of each eye was calibrated with a third-order polynomial linearization program to compensate for any nonlinearities in the search coil signal. The amplitude of the saccadic pulse was determined by subtracting the eye position at the end of the pulse (p), defined as the position at which ...
Current concepts of mechanical and neural factors in
... lateral rectus is vertical in primary position. (b) Lateral view. In supraduction to angle a, the lateral rectus rotational velocity axis tilts posteriorly by angle a/2 if distance D1 from pulley to globe center is equal to distance D2 from globe center to insertion. (c) Lateral view. In primary pos ...
... lateral rectus is vertical in primary position. (b) Lateral view. In supraduction to angle a, the lateral rectus rotational velocity axis tilts posteriorly by angle a/2 if distance D1 from pulley to globe center is equal to distance D2 from globe center to insertion. (c) Lateral view. In primary pos ...
nystagmus 2013
... Congenital forms of nystagmus Treatment 1-Maximize vision by refraction 2-Treat amblyopia 3-If small face turn; prescription of prism in glasses 4-If large face turn; muscle surgery ...
... Congenital forms of nystagmus Treatment 1-Maximize vision by refraction 2-Treat amblyopia 3-If small face turn; prescription of prism in glasses 4-If large face turn; muscle surgery ...
Ophthalmology Microsoft Word
... E. round, with 5-6 мм diameter 119. The results of refractometry 90 degrees (–) 7.0 D 180 degrees (–) 7.0 D. Its A. middle degree myopia B. *high degree myopia C. complex myopic astigmatism D. simplex myopic astigmatism E. mixt astigmatism 120. The results of refractometry 90 degrees Em 180 degrees ...
... E. round, with 5-6 мм diameter 119. The results of refractometry 90 degrees (–) 7.0 D 180 degrees (–) 7.0 D. Its A. middle degree myopia B. *high degree myopia C. complex myopic astigmatism D. simplex myopic astigmatism E. mixt astigmatism 120. The results of refractometry 90 degrees Em 180 degrees ...
Ophthalmology Microsoft Word
... E. round, with 5-6 мм diameter 119. The results of refractometry 90 degrees (–) 7.0 D 180 degrees (–) 7.0 D. Its A. middle degree myopia B. *high degree myopia C. complex myopic astigmatism D. simplex myopic astigmatism E. mixt astigmatism 120. The results of refractometry 90 degrees Em 180 degrees ...
... E. round, with 5-6 мм diameter 119. The results of refractometry 90 degrees (–) 7.0 D 180 degrees (–) 7.0 D. Its A. middle degree myopia B. *high degree myopia C. complex myopic astigmatism D. simplex myopic astigmatism E. mixt astigmatism 120. The results of refractometry 90 degrees Em 180 degrees ...
NYSTAGMUS - Schor Lab Home Page
... Although normals may show nystagmus with extreme gaze deviations, in some cases a pathology can cause significant nystagmus with only moderate deviations. This form of nystagmus is associated with a deficiency in the Neural Integrator, which generates the constant firing rate needed to hold the eye ...
... Although normals may show nystagmus with extreme gaze deviations, in some cases a pathology can cause significant nystagmus with only moderate deviations. This form of nystagmus is associated with a deficiency in the Neural Integrator, which generates the constant firing rate needed to hold the eye ...
Hyperopia - Diamond Vision
... mechanism is not sufficient and they need spectacles, or a laser vision correction procedure. • Unfortunately, people with advanced hyperopia may even suffer from both close and distant vision problems. ...
... mechanism is not sufficient and they need spectacles, or a laser vision correction procedure. • Unfortunately, people with advanced hyperopia may even suffer from both close and distant vision problems. ...
Visual Field Testing
... Malignant neoplasm of right acoustic nerve Malignant neoplasm of left acoustic nerve Malignant neoplasm of unspecified cranial nerve Malignant neoplasm of other cranial nerves Malignant neoplasm of cortex of unspecified adrenal gland Malignant neoplasm of cortex of right adrenal gland Malignant neop ...
... Malignant neoplasm of right acoustic nerve Malignant neoplasm of left acoustic nerve Malignant neoplasm of unspecified cranial nerve Malignant neoplasm of other cranial nerves Malignant neoplasm of cortex of unspecified adrenal gland Malignant neoplasm of cortex of right adrenal gland Malignant neop ...
optometry optometry - California Optometric Association
... So, when does leadership begin? Well, anytime actually. I’ve known young people who started very early, and I’ve known others who started very late in life. It isn’t about when, it’s about if. If a person understands their values, is committed to the process and has a fire in their belly, anything a ...
... So, when does leadership begin? Well, anytime actually. I’ve known young people who started very early, and I’ve known others who started very late in life. It isn’t about when, it’s about if. If a person understands their values, is committed to the process and has a fire in their belly, anything a ...
Nystagmus1 - Dr. Kumar Saurabh
... Appears on eccentric gaze. Fast phase in the direction of gaze. 1-2 beats/second, symmetrical or asymmetrical. Causes : Brain stem damage at pontine level. ...
... Appears on eccentric gaze. Fast phase in the direction of gaze. 1-2 beats/second, symmetrical or asymmetrical. Causes : Brain stem damage at pontine level. ...
Vision Screening Guidelines
... vision screening can be found in both federal and state special education laws. Federal Law, 20 U.S.C.1412 (5)(c) the Code of Federal Regulations 34 §300.532(f) states: “The child or youth who is suspected to be in need of special education is assessed in all areas related to the suspected disabilit ...
... vision screening can be found in both federal and state special education laws. Federal Law, 20 U.S.C.1412 (5)(c) the Code of Federal Regulations 34 §300.532(f) states: “The child or youth who is suspected to be in need of special education is assessed in all areas related to the suspected disabilit ...
Amblyopia Management
... spatial acuity typically less than 20/200. However, a similar insult after three months of age but before thirty months leads to a less profound visual acuity reduction but still in the range of 20/200. Deprivation from thirty months to eight years differs only in that vision is reduced at a slower ...
... spatial acuity typically less than 20/200. However, a similar insult after three months of age but before thirty months leads to a less profound visual acuity reduction but still in the range of 20/200. Deprivation from thirty months to eight years differs only in that vision is reduced at a slower ...
Paralytic Strabismus: Third, Fourth, and Sixth Nerve Palsy
... represents a true neurosurgical emergency and may be treated by surgical clipping or endovascular coiling.25 Microvascular third nerve palsy is commonly associated with risk factors including hypertension, diabetes, hyperlipidemia, advanced age, and smoking (see Fig. 4). This disorder results from i ...
... represents a true neurosurgical emergency and may be treated by surgical clipping or endovascular coiling.25 Microvascular third nerve palsy is commonly associated with risk factors including hypertension, diabetes, hyperlipidemia, advanced age, and smoking (see Fig. 4). This disorder results from i ...
NSS513 - National Open University of Nigeria
... globulin, glucose, and other constituents. The aqueous humor brings nutrients to the cornea and to the lens and removes end products of metabolism from these tissues. The vitreous humor is a collagenous or gelatinous-like mass that helps maintain the shape of the eye, but also allows it to retain so ...
... globulin, glucose, and other constituents. The aqueous humor brings nutrients to the cornea and to the lens and removes end products of metabolism from these tissues. The vitreous humor is a collagenous or gelatinous-like mass that helps maintain the shape of the eye, but also allows it to retain so ...
Handbook of Pediatric Strabismus and Amblyopia
... Tearing patients need to be questioned about any redness, photophobia, or crusting of the lashes. In ptosis, the stability or variability is important, as is any associated chin elevation or general neuromuscular problems. For difficulties in school, it is helpful to determine if the problem is only ...
... Tearing patients need to be questioned about any redness, photophobia, or crusting of the lashes. In ptosis, the stability or variability is important, as is any associated chin elevation or general neuromuscular problems. For difficulties in school, it is helpful to determine if the problem is only ...
newer avenues in management of nystagmus
... Helveston EM, Pogrebiank AE: Treatment of acquired nystagmus with botulinum A toxin. Am J Ophthalmol, 106:584, 1988. Lennerstrand G, Nordbo OA, Tian S, et al: Treatment of strabismus and nystagmus with botulinum toxin A. Acta Ophthalmol Scand 76:27, ...
... Helveston EM, Pogrebiank AE: Treatment of acquired nystagmus with botulinum A toxin. Am J Ophthalmol, 106:584, 1988. Lennerstrand G, Nordbo OA, Tian S, et al: Treatment of strabismus and nystagmus with botulinum toxin A. Acta Ophthalmol Scand 76:27, ...
Socioeconomic impact of low vision and blindness from
... a combination of both. Screening programs and early intervention is required to minimise the impact of the eye disorder on the developing visual system. If left untreated, childhood vision impairment (VI) generally continues into adulthood and working life, causing substantial impacts through a chil ...
... a combination of both. Screening programs and early intervention is required to minimise the impact of the eye disorder on the developing visual system. If left untreated, childhood vision impairment (VI) generally continues into adulthood and working life, causing substantial impacts through a chil ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
... sensation. He gives a history of blunt trauma 9 weeks back, over his left upper eye lid with a stone. On examination the visual acquity was 20/40p in the left eye which improved to 20/20p with -0.75 cylinder at 180o. Eversion of left upper lid revealed a swelling which was vertically oval measuring ...
... sensation. He gives a history of blunt trauma 9 weeks back, over his left upper eye lid with a stone. On examination the visual acquity was 20/40p in the left eye which improved to 20/20p with -0.75 cylinder at 180o. Eversion of left upper lid revealed a swelling which was vertically oval measuring ...
Strabismus
Strabismus (/strəˈbɪzməs/, from Greek strabismós) is a condition that interferes with binocular vision because it prevents a person from directing both eyes simultaneously towards the same fixation point; the eyes do not properly align with each other. Heterotropia is a medical synonym for the condition. Colloquial terms for strabismus include cross-eye, wall-eye, a squint and a cast of the eye.Strabismus typically involves a lack of coordination between the extraocular muscles, which prevents directing the gaze of both eyes at once to the same point in space; it thus hampers proper binocular vision, and may affect depth perception adversely. Strabismus is primarily managed by ophthalmologists, optometrists, and orthoptists. Strabismus is present in about 4% of children. Treatment should be started as early as possible to ensure the development of the best possible visual acuity and stereopsis.