Glaucoma is a chronic, debilitating disease and a leading cause of global blindness. Despite treatment efforts, 10% of patients demonstrate loss of vision. In the US, > 80% of glaucoma cases are classified as open-angle glaucoma (OAG), with primary open-angle (POAG) being the most common.
View Article and Find Full Text PDFThe corneal endothelium is critical in maintaining a healthy and clear cornea. Corneal endothelial cells have a significant reserve function, but preservation of these cells is paramount as they have limited regenerative capacity. Glaucoma is a prevalent disease, and damage to the corneal endothelium may be caused by the disease process itself as well as by its treatment.
View Article and Find Full Text PDFPurpose: A pilot study showed that prediction of individual Humphrey 24-2 visual field (HVF 24-2) sensitivity thresholds from optical coherence tomography (OCT) image analysis is possible. We evaluate performance of an improved approach as well as 3 other predictive algorithms on a new, fully independent set of glaucoma subjects.
Methods: Subjects underwent HVF 24-2 and 9-field OCT (Heidelberg Spectralis) testing.
Purpose Of Review: In recent decades, investigators have identified numerous genes and genetic factors that cause or contribute risk for glaucoma. These findings have increased our understanding of disease mechanisms, provided us with new diagnostic tools, and may allow for development of improved therapies for glaucoma. However, genetic testing is most useful when it is reserved for appropriate patients.
View Article and Find Full Text PDFPurpose: To report 5 cases of intractable intraocular pressure (IOP) elevation and 2 cases of corneal failure in patients with exfoliation glaucoma after undergoing selective laser trabeculoplasty (SLT).
Methods: SLT was performed for the treatment of exfoliation glaucoma in 5 patients, all of whom subsequently developed significant IOP elevation within 1 to 5 weeks following treatment. Two patients went on to develop corneal endothelial failure requiring transplantation within 9 to 11 months.
Purpose: To compare the consistency of incision architecture utilizing a traditional diamond keratome and a newly designed diamond keratome.
Methods: We used a traditional diamond keratome and newly designed diamond keratome to create clear corneal incisions in human cadaveric donor eyes. Three surgeons with varying levels of experience made 30 incisions with each keratome; and the wound architecture was measured including incision lengths, epithelial and endothelial widths, and the central epithelial incision's deviation from a straight line entrance.
Purpose: To report and compare the results of trabeculectomy with mitomycin C (MMC) and Ahmed valve implantation in the management of uveitic glaucoma.
Patients And Methods: The records of 41 eyes of 29 patients who underwent trabeculectomy with MMC or Ahmed valve implantation for uveitic glaucoma were retrospectively reviewed. Seventeen eyes underwent trabeculectomy with MMC, and 24 eyes underwent Ahmed valve implantation.
J Refract Surg
November 2012
Purpose: To provide a background regarding the biochemical rationale for corneal collagen cross-linking (CXL) and outline its current use, critically evaluate the current literature for the use of CXL in nonectatic disorders, highlight limitations and areas for further research, and address additional novel applications of CXL.
Methods: A literature search was performed using the EMBASE and MEDLINE database from 1970 to November 2011. Keywords included "corneal collagen cross linking," "crosslinking," "cross-linking," "ultraviolet," "riboflavin," "corneal edema," and "keratitis" in various combinations.
Purpose: To describe two cases of bilateral acute iris transillumination following systemic administration of moxifloxacin and review the literature.
Methods: Review of clinical records, and review of the literature using the PubMed database.
Results: A 75 year-old man and 33 year-old woman presented with bilateral conjunctival injection, photophobia, and atonic, distorted pupils.
The diagnosis, evaluation, and management of infantile spasms (IS) continue to pose significant challenges to the treating physician. Although an evidence-based practice guideline with full literature review was published in 2004, diversity in IS evaluation and treatment remains and highlights the need for further consensus to optimize outcomes in IS. For this purpose, a working group committed to the diagnosis, treatment, and establishment of a continuum of care for patients with IS and their families—the Infantile Spasms Working Group (ISWG)—was convened.
View Article and Find Full Text PDFPurpose: The renin angiotensin system (RAS) has been shown to modulate vascular endothelial growth factor and angiogenesis. In this study we investigated (i) the existence of the RAS components angiotensin converting enzyme (ACE) and angiotensin II receptors (AT(1) and AT(2)) in the rabbit cornea using in vitro and ex vivo models and (ii) the effect of enalapril, an ACE inhibitor, to inhibit angiogenesis in rabbit cornea in vivo.
Methods: New Zealand White rabbits were used.
Purpose: We present three children who underwent right-sided vagus nerve stimulation (R-VNS). This treatment option for people with refractory epilepsy has not been described in children.
Methods: We reviewed our database of >350 patients implanted with vagus nerve stimulators and now describe our experience in three patients with R-VNS for the treatment of intractable seizures.
Background: This study retrospectively compared the effectiveness of vagus nerve stimulation (VNS) therapy among a constant cohort of patients in the patient outcome registry, which systematically monitors outcomes of patients receiving VNS therapy. Patients in the study had pharmacoresistant seizures for 6 years or less (early treatment group) or more than 6 years (late treatment group) before initiation of VNS therapy, and results are provided after both 3 and 12 months.
Review Summary: Of 405 patients, 51 were in the early and 354 in the late treatment groups.
The Quality Standards Subcommittee of the American Academy of Neurology and the Practice Committee of the Child Neurology Society develop practice parameters as strategies for patient management based on analysis of evidence regarding risks and benefits. This parameter reviews published literature relevant to the decision to begin treatment after a child or adolescent experiences a first unprovoked seizure and presents evidence-based practice recommendations. Reasons why treatment may be considered are discussed.
View Article and Find Full Text PDFObjective: The Quality Standards Subcommittee of the American Academy of Neurology develops practice parameters as strategies for patient management based on analysis of evidence. For this practice parameter, the authors reviewed available evidence on evaluation of the first nonfebrile seizure in children in order to make practice recommendations based on this available evidence.
Methods: Multiple searches revealed relevant literature and each article was reviewed, abstracted, and classified.
Objective: To evaluate the safety and efficacy of oxcarbazepine (OXC) as adjunctive therapy in children with inadequately controlled partial seizures on one or two concomitant antiepileptic drugs (AEDs).
Background: OXC has shown antiepileptic activity in several comparative monotherapy trials in newly diagnosed patients with epilepsy, and in a placebo-controlled monotherapy trial in hospitalized patients evaluated for epilepsy surgery.
Design: A total of 267 patients were evaluated in a multicenter, randomized, placebo-controlled trial consisting of three phases: 1) a 56-day baseline phase (patients maintained on their current AEDs); 2) a 112-day double-blind treatment phase (patients received either OXC 30-46 mg/kg/day orally or placebo); and 3) an open-label extension phase.
We observed four young adults, including three siblings, with a progressive neurologic disorder that developed over the first two decades. Electrophysiologic studies revealed mildly delayed nerve conduction, decreased amplitudes of sensory action potentials, and sensory delay in the posterior columns. Known causes of similar neurologic disorders were excluded.
View Article and Find Full Text PDFTreatment of the vitamin E deficiency neurologic syndrome in children with chronic cholestasis is hampered by the very poor intestinal absorption of available forms of vitamin E, thus requiring prolonged treatment with intramuscular injections of vitamin E in many patients. D-alpha-tocopheryl polyethylene glycol 1000 succinate (TPGS) is a water-soluble investigational form of vitamin E that is well absorbed during cholestasis. We studied the effect of TPGS therapy on the neurologic function in 12 children with vitamin E deficiency (aged 9 months to 6 years) with prolonged forms of neonatal cholestasis.
View Article and Find Full Text PDFA 30-year-old woman was thought to have Friedreich's disease because of progressive ataxia, dysarthria, and titubation from age 3 years. Her diet was normal, and there were neither symptoms nor laboratory evidence of liver disease or fat malabsorption. Serum vitamin E content and the ratio of serum vitamin E to total serum lipid were very low, but serum vitamin A, cholylglycine, and lipid levels were normal, as was an oral vitamin E tolerance test.
View Article and Find Full Text PDFFebrile seizures are a common problem. Simple febrile seizures usually occur in otherwise normal children and are brief, generalized, and relatively benign. First febrile seizures should be evaluated by a physician to rule out serious underlying disease.
View Article and Find Full Text PDFThe ability of midbrain homogenates from two strains of mice to accumulate several putative neurotransmitters, or their precursor in the case of acetylcholine, has been examined. The high-affinity transport mechanisms toward glutamate, GABA, dopamine, and glycine were similar in both strains. The seizure-prone DBA21BG strain had a significantly higher capacity to transport choline than did the relatively seizure-resistant C57BL/6 IBC mice.
View Article and Find Full Text PDFActa Neurochir (Wien)
December 1979
Motor tics of the head and neck, especially hemifacial spasm and spastic torticollis, are the substance of this paper. Forty-six cases are presented, and surgical techniques are described. In hemifacial spasm the intracranial neurovascular lysis of Jannetta is a valid operation with the best results to date but has a 7 1/2% risk of unilateral deafness.
View Article and Find Full Text PDFActa Neurochir (Wien)
October 1979
1. The syndrome of incisural hippocampal herniation, accompanied by unilateral and then bilateral fixed pupils, deepening coma, respiratory irregularity (Cheyne-Stokes), contralateral hemiplegia, ipsilateral decerebrate posturing rising blood pressure, and finally renal shutdown, indicates a terminal state that requires immediate relief. 2.
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