منابع مشابه
Nonorganic visual loss in a child due to school bullying
Purpose To describe a case of a child with nonorganic visual loss due to school bullying. Observations An eight-year-old boy presented with bilateral painless vision loss for a few days. His best corrected visual acuity (BCVA) was 20/200 in the right eye and 20/140 in the left eye. Color vision was normal. Fundoscopy, visual fields, electroretinography, electrooculography and visual evoked po...
متن کاملMultifocal visual evoked potential in nonorganic visual field loss.
OBJECTIVE To evaluate the use of multifocal visual evoked potentials in the diagnosis of nonorganic visual field loss. METHODS Five patients with unexplained visual field loss underwent full neuro-ophthalmic examination, Humphrey visual field testing, and multifocal visual evoked potential testing using the Accumap objective perimeter (ObjectiVision Pty Ltd, Sydney, Australia). RESULTS In a...
متن کاملStimulus parameters for goldmann kinetic perimetry in nonorganic visual loss.
OBJECTIVE To investigate the influence of the stimulus parameters on perimetry at various distances and draw conclusions for the clinical exploration of nonorganic visual loss. METHODS Visual field testing using Goldmann kinetic perimetry was performed on 15 healthy volunteers. The I/1e isopter at 33 cm was compared to the I/1e, II/1e and I/2e isopters at 66 cm. The 0/1e isopter at 33 cm was ...
متن کاملPitfalls in the Use of Stereoacuity in the Diagnosis of Nonorganic Visual Loss.
PURPOSE The Titmus Stereotest (Stereo Optical Co., Inc., Chicago, IL) has been used to estimate visual acuity (VA) in the evaluation of nonorganic visual loss. Previous predictions were derived from optical degradation of VA in normal subjects and may not account for the variability seen in patients with neuro-ophthalmic pathologies included in the differential diagnosis of nonorganic visual lo...
متن کاملDetection of nonorganic visual loss with a new optotype chart in simulated malingerers.
BACKGROUND We tested a new distance and pocket optotype chart for detection of nonorganic symmetrically decreased vision in simulated malingerers. The new optotype used in the charts is based on a subjective contour formed by a misalignment of two line segments. The minimum angle of resolution of this optotype is independent of its size. Subjects claiming to see only the larger optotypes are su...
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ژورنال
عنوان ژورنال: Saudi Journal of Ophthalmology
سال: 2020
ISSN: 1319-4534
DOI: 10.4103/1319-4534.310419