Perceptual relevance of abnormal visual field representations: static visual field perimetry in human albinism

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Perceptual relevance of abnormal visual field representations: static visual field perimetry in human albinism.

BACKGROUND In human albinism the plasticity of the visual system is challenged, as part of the temporal retina projects abnormally to the contralateral hemisphere. AIM To investigate whether the sensitivity of the abnormally projecting temporal retina is preserved. METHODS Light spot detection sensitivities were assessed in the central 20 degrees of the visual field in 15 patients with albi...

متن کامل

Pituitary adenomas: automatic static perimetry and Goldmann perimetry. A comparative study of 345 visual field charts.

In a series of 81 cases of pituitary adenoma 345 charts of visual field performed with static automatic perimetry (AP) on the Vision Monitor and Goldmann perimetry (GP) were compared. Generally both methods were equivalent in the detection of chiasmal compression. The charts were divided into two groups: (A) 208 charts and (B) 137 charts according to the number of isoptres investigated: two (V4...

متن کامل

Volume of visual field assessed with kinetic perimetry and its application to static perimetry

BACKGROUND The purpose of this study was to quantify the volume of the kinetic visual field with a single unit that accounts for visual field area and differential luminance sensitivity. METHODS Kinetic visual field perimetry was performed with a Goldmann perimeter using I4e, I3e, I2e, and I1e targets. The visual fields of 25 normal volunteers (17 women, eight men) of mean age 33.9 ± 10.1 (ra...

متن کامل

Visual field representations and locations of visual areas V1/2/3 in human visual cortex.

The position, surface area and visual field representation of human visual areas V1, V2 and V3 were measured using fMRI in 7 subjects (14 hemispheres). Cortical visual field maps of the central 12 deg were measured using rotating wedge and expanding ring stimuli. The boundaries between areas were identified using an automated procedure to fit an atlas of the expected visual field map to the dat...

متن کامل

Volume perimetry: measurement in depth of visual field loss.

PURPOSE Volume scotomas are three-dimensional regions of space that are not visible to the observer. Volume perimetry maps volume scotomas. Volume scotomas predicted from combining monocular visual fields assume known fixation locus (mainly foveal). However, fixation loci are not always known, especially with central field loss (CFL). Here we demonstrate methods for measuring and calculating vo...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: British Journal of Ophthalmology

سال: 2007

ISSN: 0007-1161

DOI: 10.1136/bjo.2006.094854