نتایج جستجو برای: posterior segment
تعداد نتایج: 191050 فیلتر نتایج به سال:
PURPOSE To present a case series on the use of dexmedetomidine (Precedex) sedation in painful posterior segment surgery performed under topical anesthesia, similar to its use in cataract surgery. METHODS A prospective review of cases that had posterior segment surgery under topical anesthesia and that needed sedation. Dexmedetomidine-loading infusion was 1 mcg/kg over 10 minutes, followed by ...
PURPOSE To describe the incidence, timing, visual significance, and management of posterior segment complications after Boston type I keratoprosthesis implantation. METHODS A retrospective chart review was conducted of all consecutive Boston type I keratoprostheses implanted by a single surgeon at a single institution over a 6-year period. Preoperative demographics, postoperative complication...
background :in addition to diagnosing the acute myocardial infarction (mi), stratifying high-risk patients and proper treatment strategies are important issues in managing patients complaining of chest pain and suspecting mi. many studies have been conducted to predict the occlusion site by interpreting the st segment deviations in electrocardiogram (ecg).additional posterior and right precordi...
Drug delivery to the posterior eye segment is an important challenge in ophthalmology, because many diseases affect the retina and choroid leading to impaired vision or blindness. Currently, intravitreal injections are the method of choice to administer drugs to the retina, but this approach is applicable only in selected cases (e.g. anti-VEGF antibodies and soluble receptors). There are two ba...
AIM To evaluate the safety and effectiveness of high dose intravenous steroid therapy (HDIST) in Behçet's disease patients with severe posterior segment uveitis attacks. METHODS Five patients with ocular Behçet's disease were treated with HDIST for severe posterior segment attacks. Two patients had vasculitis, one patient had papillitis, and the other two had retinitis; four patients also had...
The classical clinical triad of retinitis pigmentosa is arteriolar attenuation , retinal bone-spicule pigmentation and waxy disc pallor. A 33 year old female patient is introduced here. She had unilateral posterior subcapsular cataract, heterochromic iris, and uveitis.The patient also suffered night blindness , had a family history of low vision ,and reduced visual acuity in her right e...
1. Evidence has been obtained showing that unlike the requirements of errant polychaetes studied by other investigators, at least two species of sedentary polychaetes, Branchiomma nigromaculata and Chaetopterus variopedatus can undergo caudal regeneration in the absence of a brain. 2. Both Branchiomma, when maintained in a brainless condition by repeated removal of anterior segments, and Chaeto...
Objective: A case of posterior cerebral artery (P1 segment) occlusion with consciousness disturbance and Weber’s syndrome treated by mechanical thrombectomy is reported.
intravitreal injection is the most common approach for drug delivery to the posterior segment in humans. however, following the injection, drugs are rapidly eliminated from the vitreous, with half-lives up to a few days. depending on the rate of clearance from the vitreous, large boluses and frequent administrations may be required to ensure therapeutic levels over an extended period of time. m...
A clonal analysis has shown that the dorsal surface of the first abdominal segment of Drosophila melanogaster is subdivided into anterior and posterior compartments. Cells of the posterior compartment grow up to but not beyond the anterior-posterior compartment border within the first abdominal segment and the intersegmental border that defines the boundary between the first and second abdomina...
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