نتایج جستجو برای: corneal reflex
تعداد نتایج: 50708 فیلتر نتایج به سال:
Dry eye syndrome is a painful condition caused by inadequate or altered tear film on the ocular surface. Primary afferent cool cells innervating the cornea regulate the ocular fluid status by increasing reflex tearing in response to evaporative cooling and hyperosmicity. It has been proposed that activation of corneal cool cells via a transient receptor potential melastatin 8 (TRPM8) channel ag...
Background/Objective: Hyperphosphatemia is the consequence of end stage renal failure. Inadequate control of serum phosphorus results in elevated Ca×P product with subsequent soft tissue deposition in the form of conjunctival and corneal calcification. In this study, we evaluated the relationship of conjunctival and corneal calcification with secondary hyperparathyroidism in hemodialysis patie...
Background: Correlations between bone marrow, heart, kidney, liver, skin and lung transplant rejection or survival with human cytokine gene polymorphisms have been described. There are also reports about the role of cytokines and Tumor Necrosis Factors-Alpha (TNF-α) on corneal transplant in animal models. Further studies are needed to clarify the role of cytokines in corneal allograft rejection...
Strachan (i968) described a bilateral corneal dystrophy in a 62-year-old man, characterized by punctate, irregular opacities located mainly in the deepest layers of the cornea. The middle and superficial layers were involved to a lesser extent. The size and density of the lesions were sufficient to produce a distorted view of the fundus and to break up the red reflex. Some of the larger opaciti...
PURPOSE To describe a modified Fasanella-Servat procedure and nomogram for the correction of minimal amounts of ptosis. METHODS Retrospective review of this modified Fasanella-Servat procedure was performed on 118 eyelids in 86 consecutive patients over 2, 4-year periods by 1 surgeon (S.C.D.). The amount of tarsectomy was based on the amount of ptosis. RESULTS Mean pre- and postoperative ma...
three cases who underwent surgery in different areas of the craniofacial region were reported with bradycardia developing intraoperatively during flap traction. many cases of the oculocardiac reflex during treatment of the orbital region have been reported in the literature. this manuscript recorded that reflex bradycardia can occur during traction or stretching of any structure innervated by t...
background: h-reflex is a valuable electrophysiological technique for assessing nerve conduction through entire length of afferent and efferent pathways, especially nerve roots and proximal segments of peripheral nerves. the aim of this study was to investigate the relation between normal values of flexor carpi radialis (fcr) h-reflex latency, upper limb length and age in normal subjects, and t...
چکیده مقدمه: مطالعه هدایت عصبی و الکترومیوگرافی با سوزن نقش محوری در ارزیابی بیماران دچار بیماری های عصبی- عضلانی دارد. اندازه گیری h-reflex عصب تیبیال یکی از رایج ترین مراحل الکترومیوگرافی بالینی است که بخصوص در تشخیص رادیکولوپاتی s1 مؤثراست. اهمیت h-reflex از این نظر است که در درگیری ریشه s1 – یکی از شایع ترین درگیری ها در هرنی دیسکال- خیلی زودستخوش تغییر می شود. هدف: برررسی میانگین h-reflex ...
BACKGROUND Successful donation of organs after cardiac death (DCD) requires identification of patients who will die within 60 min of withdrawal of life-sustaining treatment (WLST). We aimed to validate a straightforward model to predict the likelihood of death within 60 min of WLST in patients with irreversible brain injury. METHODS In this multicentre, observational study, we prospectively e...
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