نتایج جستجو برای: binocular vision

تعداد نتایج: 132022  

جعفری, علیرضا, میرزاجانی, علی,

  Background : To determine the effect of binocular summation on the time domain transient VEP wave's components.   Methods : The monocular and binocular transient visual evoked potentials of 21 normally vision volunteers 18 to 24 years (mean ± SD, 20.7 ± 1.9) during a reversing checkerboard stimulus with spatiotemporal frequency of 2.18-4 cpd-Hz were recorded. The amplitude and latency of N75,...

Journal: :journal of current ophthalmology 0
دیما عندلیب dima andalib رضا نبیئی reza nabie بیان پورمحمد bayan poormohammad

purpose: to evaluate the effect of successful surgical alignment on improvement of binocular vision in adults with childhood strabismus methods: in a prospective interventional study, consecutive patients with childhood-onset, comitant, horizontal and constant strabismus who had successful postoperative alignment were enrolled. preoperative and postoperative binocular vision testing was perform...

Journal: :بینا 0
حامد مومنی مقدم h momeni-moghaddam zahedan university of medical sciences, zahedan, iranزاهدان- خیابان آیت اله کفعمی- دانشکده علوم توانبخشی- کلینیک بینایی سنجی مرضیه احسانی m ehsani zahedan university of medical sciences, zahedan, iranزاهدان- خیابان آیت اله کفعمی- دانشکده علوم توانبخشی- کلینیک بینایی سنجی فرشاد عسگری زاده f asgarizadeh zahedan university of medical sciences, zahedan, iranزاهدان- خیابان آیت اله کفعمی- دانشکده علوم توانبخشی- کلینیک بینایی سنجی منیره محجوب m mahjoob سعیده حسینی s hosseini سمیرا دربان جعفری s darban-jafari

purpose: to determine stereopsis with local (titmus) and global (tno) tests in symptomatic and asymptomatic subjects according to induced disparity (crossed or uncrossed). methods: in this cross sectional study, 80 students of zahedan university of medical sciences who fulfilled the inclusion criteria were randomly selected. at first, refractive error was determined by retinoscopy and then base...

Journal: :iranian red crescent medical journal 0
hamed momeni moghadam health promotion research center, zahedan university of medical sciences, zahedan, ir iran; health promotion research center, zahedan university of medical sciences, zahedan, ir iran. tel/fax: +98-5413228445 david a goss school of optometry, indiana university, bloomington, indiana, usa abbas a yekta school of paramedical sciences, mashad university of medical sciences, mashhad, ir iran marzieh ehsani school of rehabilitation sciences, zahedan university of medical sciences, zahedan, ir iran

conclusions the x-intercepts (point at which the fdc crosses the x-axis) were on average more in the base-in direction, y-intercepts (point at which the fdc crosses the y-axis) were shifted in the exo direction, and slopes were steeper in the symptomatic group. results there were more subjects with exo fixation disparity than eso fixation disparity in the study sample. the means for fixation di...

Journal: :journal of current ophthalmology 0
داود قره باغی davood gharabaghi مینو آزاده minoo azadeh

purpose : patients with infantile or childhood strabismus who do not achieve visual axes alignment early in life are believed to have poor prognosis with respect to the stereopsis. this study investigates the binocularity and stereopsis following delayed surgical alignment in patients with congenital and early-onset strabismus. patients & methods : 36 patients aged between 6-30 years participat...

Journal: :Nature 1938

Journal: :بینا 0
سیدحسن هاشمی h hashemi تهران- خیابان ولی عصر- بلوار اسفندیار- بیمارستان چشم پزشکی نور- بخش ارتوپتیک ابراهیم جعفرزاده پور e jafarzadehpur تهران- خیابان ولی عصر- بلوار اسفندیار- بیمارستان چشم پزشکی نور- بخش ارتوپتیک آزاده فرحی a farahi تهران- خیابان ولی عصر- بلوار اسفندیار- بیمارستان چشم پزشکی نور- بخش ارتوپتیک

purpose: to report the results of orthoptic training in two middle-aged patients according to current theories. case report: a 56-year-old female with decompensated exophoria and myopia and a 68-year-old male with decompensated esophoria and moderate hyperopia underwent vision therapy according to standard procedures for improving fusional vergences and ocular accommodation. sheard and percival...

Journal: :Izvestiâ vysših učebnyh zavedenij. Priborostroenie 2015

Journal: :بینا 0
علیرضا جعفری a jafari international branch, shahid beheshti university of medical sciences, tehran, iranدانشگاه علوم پزشکی تهران- مرکز تحقیقات توانبخشی- بخش الکتروفیزیولوژی علی میرزاجانی a mirzajani rehabilitation research center tehran university of medical sciences, tehran, iranدانشگاه علوم پزشکی تهران- مرکز تحقیقات توانبخشی- بخش الکتروفیزیولوژی محمد آقازاده امیری m amiri school of rehabilitation shahid beheshti university of medical sciences, tehran, iranدانشگاه علوم پزشکی تهران- مرکز تحقیقات توانبخشی- بخش الکتروفیزیولوژی

purpose: to evaluate the effect of vertical prism induced stress on binocular visual evoked potentials. methods: using checkerboard stimulus patterns in two spatial frequencies (sfs) of 0.48 cpd as a low sf and 2.18 cpd as a moderate sf reversing with temporal frequency of 4 hz, the effect of increasing visual stress using vertical prisms of 0, 1, 2 and 3 prism diopters on binocular visual evok...

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