نتایج جستجو برای: foveal reflex
تعداد نتایج: 25921 فیلتر نتایج به سال:
Purpose To identify predictors of best corrected visual acuity (BCVA) in eyes with foveal-sparing geographic atrophy (GA) secondary to age-related macular degeneration (AMD). Methods Best corrected visual acuity (Early Treatment Diabetic Retinopathy Study charts); serial fundus autofluorescence; and near-infrared reflectance images of patients participating in the FAM (NCT00393692) and DSGA (...
PURPOSE To provide a clinical and genetic description of a patient cohort with Stargardt disease (STGD1) with identifiable foveal sparing. METHODS Patients with retinal atrophy (defined as an absence of autofluorescence) that surrounded the fovea by at least 180° and did not include the fovea were defined as having foveal sparing; eyes with visual acuity (VA) worse than 20/200 were excluded. ...
PURPOSE To investigate the relationship between development of the perifoveal blood vessels and formation of the foveal depression. METHODS Retinal sections and flatmounts from monkeys aged between fetal day (Fd)80 and 2 years of age were double labeled using antisera to CD31 or von Willebrand factor to detect vascular endothelial cells and antiserum to glial fibrillary acidic protein to dete...
Background: Neck roots lesion is one of the reasons for cervical and arm pain. A detailed patient evaluation could improve diagnose, reduce imaging requests, and speedy treatment of cervical pain. We tried to estimate the utility of pronator teres reflex in C6 and C7 roots irritation. Methods: Present study is composed of 118 participants including 56 with C6 and C7 lesion and 62 normal contro...
We describe hereditary retinoschisis without foveal retinoschisis in a girl (the product of a consanguineous marriage) and her father. The father had peripheral retinoschisis with dendritic changes of the retina and good visual acuity. The daughter had peripheral retinoschisis complicated by vitreous haemorrhage and retinal detachment. Neither had foveal retinoschisis. The pattern in a scotopic...
the purpose of this study was to investigate the validity of the modified ashworth scale (mas) by using both the conventional (hmax/mmax ratio) and the new indicators (hslp/mslp) of motoneuron excitability. this research was a correlational study on twenty post-stroke patients. main outcome measures were the mas and electrophysiologic assessments. the latter was performed using both conventiona...
The ability to discriminate perfect from imperfect mirror symmetry was examined at the fovea and at eccentricities out to 10 degrees in the nasal visual field. A 2-AFC method of constant stimuli was employed in which a bilaterally symmetric pattern was presented in one interval and a degraded version of this symmetric pattern in the other. The subject's task was to decide which interval contain...
OBJECTIVE To study the development of the perifoveal retinal vasculature. METHODS We studied 7 retinas aged between 26 weeks' gestation and 1 week postnatal (41 weeks' gestation). Sections were imaged using high-resolution digital photography and blood vessel profiles identified at 200% to 300% magnification. Flat mounts were immunolabeled using antibodies to CD31 and factor VIII to identify ...
Purpose We report the clinical characteristics of a Japanese family with autosomal dominant oculocutaneous albinism and a SLC45A2 gene mutation. Methods A total of 16 members of a Japanese family with general hypopigmentation and foveal hypoplasia underwent detailed clinical examinations. We evaluated the severity of foveal hypoplasia using spectral-domain optical coherence tomography (SD-OCT...
It remains controversial and hotly debated whether foveal information is double-projected to both hemispheres or split at the midline between the two hemispheres. We investigated this issue in a unique patient with lesions in the splenium of the corpus callosum and the left medial occipitotemporal region, through a series of neuropsychological tests and multimodal MRI scans. Behavioral experime...
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