نتایج جستجو برای: incidence of vitreous loss

تعداد نتایج: 21196740  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده علوم 1391

nanotechnology is a general term which is related with field of all advanced science term that generally predicates with all modern technologies which consider nanoscales. improvement in the quality of products by adding some nanoparticles and study of their behavior in the presence of these nanoparticles have been obtained in many researches. on the other hand numerous demands for sowing ...

Journal: :The British journal of ophthalmology 1997
F Van Cauwenberge J M Rakic A Galand

BACKGROUND A 1 year retrospective analysis of 650 patients, who underwent a posterior capsulorhexis on their intact capsules, was performed to examine the incidence of complications, their aetiologies, and the outcome. METHODS Data were analysed on 32 patients with complicated capsulorhexis for type of surgery, preoperative and postoperative factors, and relative risk factors for vitreous iss...

Journal: :British Journal of Ophthalmology 1971

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده فیزیک 1390

in this thesis, barium ferrite nano particles were prepared by sol-gel method. their structural and magnetic properties of samples have been investigated using thermo gravimetric analysis (tg-dta), x-ray powder diffractometer (xrd), fourier transform infrared (ftir), scanning electron microscopy (sem), field emission scanning electron microscopy (fesem), ac susceptometer, vibrating sample magne...

Journal: :The British journal of ophthalmology 1971
M A Galin R Robbins S Obstbaum

Retrobulbar anaesthesia, digital massage, osmotic therapy, and acetazolamide are frequently employed in various combinations to effect ocular hypotony before cataract extraction.* It is believed by many that hypotony prevents vitreous loss during this operation. t Profound akinesia to preclude extraocular muscle contraction and resulting shortening of the scleral shell is a clinically accepted ...

Journal: :بینا 0
محمدرضا جعفری­نسب mr jafarinasab تهران- پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم محمدعلی جوادی ma javadi تهران- پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم محمدمهدی صدوقی mm sadooghi دانشگاه علوم پزشکی شهید بهشتی آرش انیسیان a anisian مرکز تحقیقات چشم دانشگاه علوم پزشکی شهید بهشتی

purpose: to evaluate the incidence of pseudoexfoliation syndrome (xfs) in patients with senile cataract who were scheduled for phacoemulsification and intraocular lens implantation (pe + iol) and to compare the outcomes of pe+iol between eyes with and without xfs. method: we retrospectively reviewed 2200 eyes with cataract undergoing pe + iol. all procedures were performed by a single surgeon (...

Journal: :The British journal of ophthalmology 1990
P D Fox R W Acheson G R Serjeant

Choroidal neovascularisation developed in 62/66 (94%) eyes followed up for a mean period of 11.2 years after treatment with xenon arc feeder vessel coagulation for proliferative sickle retinopathy (PSR). In 27 eyes the neovascularisation was chorioretinal alone and in 35 eyes choriovitreal. Chorioretinal neovascularisation (CRN) was a benign complication but may convert to choriovitreal neovasc...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده فنی و مهندسی 1391

در این پروژه فیلترهای مایکرواستریپ جدیدی برای به‎‎دست آوردن اندازه‎ی فشرده، پاسخ تیز و نیز باند قطع عریض ارائه‎ شده است که از جمله‎ی آن ها فیلتری است که از سری شدن یک رزوناتور شاخه‎ای منتهی به نیم‎دایره و یک تکه‎ی‎ شعاعی بهبود یافته به عنوان تضعیف کننده‎ی هارمونیک، تشکیل شده است. فرکانس قطع -3 db این فیلتر در 1.54 ghz قرار دارد. باند‎ گذر این فیلتر تنها 0.26 ghz است که شامل محدوده‎ی فرکانسی 1.5...

Journal: :Investigative ophthalmology & visual science 1986
S Kitano S Nagataki

The transport of fluorescein monoglucuronide, a fluorescent metabolite of fluorescein, from the vitreous was studied. Ten microliter of 1 mM fluorescein monoglucuronide or fluorescein solution was injected into the rabbit vitreous body, and the vitreous concentration was measured every 2 hr. The rate of loss from the vitreous was 0.066 +/- 0.012 (SD)/hour for fluorescein monoglucuronide and 0.2...

Journal: :JAMA ophthalmology 2013
David F Patterson Edwin H Ryan

External drainage of subretinal fluid during scleral buckling procedures is considered by many ophthalmologists to be a rather dangerous and uncontrolled process owing to the potential for complications such as retinal incarceration, subretinal hemorrhage, and loss of vitreous. Typically, drainage is monitored externally, with only intermittent use of indirect ophthalmoscopy to assess drainage ...

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