126 - 150 of 182
Number of results to display per page
CreatorTitleDescriptionSubjectDate
126 Durney, Carl H.A computer graphics method for solving transcendental equationsThere are a number of ways to determine the values of x which satisfy the equation F(x)=0. (The case of interest here is that in which F i s a complex function of the complex variable x.) One way is to search for values of x which make Real (F(x)) and Imaginary (F(x)) both zero at the same time wher...Transcendental equations1970
127 Olson, Randall J.Mathematical description of causative factors and prevention of elevated intraocular pressure after keratoplastyIn keratoplasty with grafts the same size as the recipient bed, tight sutures and thick recipient corneal periphery distort the angle and may collapse the filtering meshwork. This can cause very high postoperative pressures, which can be avoided by the use of donor grafts larger than the recipient b...Keratoplasty; Trabecular Collapse; Angle Disrottion; Elevated Pressure; Aphakia; Mathematics1977-12
128 Baehr, Wolfgang; Prestwich, Glenn D.Photoreceptor cGMP phosphodiesterase delta subunit (PDEdelta) functions as a prenyl-binding proteinBovine PDEdelta was originally copurified with rod cGMP phosphodiesterase (PDE) and shown to interact with prenylated, carboxymethylated C-terminal Cys residues. Other studies showed that PDEdelta can interact with several small GTPases including Rab13, Ras, Rap, and Rho6, all of which are prenylate...Fluorescence Resonance Energy Transfer; GTP Phosphohydrolases; Immunohistochemistry2004
129 Jones, Bryan W.; Jones, Christopher R.; Czajkowski, LauraFamilial advanced sleep-phase syndrome: a short-period circadian rhythmvariant in humansBiological circadian clocks oscillate with an approximately 24-hour period, are ubiquitous, and presumably confer a selective advantage by anticipating the transitions between day and night. The circadian rhythms of sleep, melatonin secretion and body core temperature are thought to be generated by ...Activity Cycles; Matched-Pair Analysis; Polysomnography1999
130 Baehr, Wolfgang; Zhang, Kang; Kolb, HelgaGene array and expression of mouse retina guanylate cyclase activating proteins 1 and 2PURPOSE: To identify gene arrangement, chromosomal localization, and expression pattern of mouse guanylate cyclase activating proteins GCAP1 and GCAP2, retina-specific Ca2+-binding proteins, and photoreceptor guanylate cyclase activators. METHODS: The GCAP1 and GCAP2 genes were cloned from genomic l...Molecular Sequence Data; Guanylate Cyclase-Activating Proteins; In Situ Hybridization, Fluorescence1998
131 Normann, Richard A.; Kolb, Helga; Lasater, Eric M.Signal integration at the pedicle of turtle cone photoreceptors: an anatomical and electrophysiological studyThe morphology of the axon which connects the cell body and pedicle of turtle cone photoreceptors was studied by light and electron microscopy. The axon which contains numerous synaptic vesicles, some endoplasmic reticulum, and a few cisternae is basically filled with cytoplasm. The length of the ax...Cone Photoreceptor, Voltage Clamp; Isolated Cells; Input Resistance; Cell Body-Pedicle Coupling1989
132 Baehr, WolfgangCalcium-sensitive particulate guanylyl cyclase as a modulator of cAMP in olfactory receptor neuronsThe second messengers cAMP and inositol-1,4,5-triphosphate have been implicated in olfaction in various species. The odorant-induced cGMP response was investigated using cilia preparations and olfactory primary cultures. Odorants cause a delayed and sustained elevation of cGMP. A component of this c...Calcium-Binding Proteins; Nerve Tissue Proteins; Rats, Sprague-Dawley1998
133 Fu, YingbinMechanism of reductive activation of potato tuber ADP-glucose pyrophosphorylase.The potato tuber (Solanum tuberosum L.) ADP-glucose pyrophosphorylase activity is activated by a incubation with ADP-glucose and dithiothreitol or by ATP, glucose- 1-phosphate, Ca2+, and dithiothreitol. The activation was accompanied by the appearance of new sulfhydryl groups as determined with 5, 5...Glucosephosphates; Enzyme Activation; Adenosine Triphosphate1998
134 Zhang, KangHeterozygous and homozygous mutations in PITX3 in a large Lebanese family with posterior polar cataracts and neurodevelopmental abnormalitiesPURPOSE: The PITX3 gene, which codes for a homeobox bicoidlike transcription factor is responsible for dominant cataract and anterior segment mesenchymal dysgenesis in humans. In the current study, a family with autosomal dominant posterior polar cataract (PPC) and a PITX3 mutation that cosegregates...Chromosomes, Human, Pair 10; Homozygote; Lod Score2006
135 Olson, Randall J.Clinical comparison of single-piece and three-piece truncated hydrophobic acrylic intraocular lensesPURPOSE: To determine the clinical differences between three-piece (3P) and single-piece (SP) truncated hydrophobic acrylic intraocular lenses (IOL). DESIGN: Retrospective cohort clinical study. METHODS: The setting was an academic clinical practice. The patient population consisted of subjects with...Lenses, Intraocular; Patient Satisfaction; Postoperative Complications; Prosthesis Design; Visual Acuity2003-10
136 Olson, Randall J.; Pingree, Michael F.; Lundergan, Maureen K.Penetrating keratoplasty for keratoconus: a long-term review of results and complicationsPURPOSE: To study the long-term complications of penetrating keratoplasty (PKP) to evaluate current recommendations to patients with keratoconus. SETTING: John Moran Eye Center, University of Utah, Salt Lake City, Utah, USA. METHODS: Retrospective study of all PKP procedures for keratoconus performe...Visual Acuity; Refraction, Ocular; Keratoconus; Astigmatism2000-07
137 Olson, Randall J.; Mamalis, Nick; Spencer, Terrence S.Postoperative sterile endophthalmitis (TASS) associated with the memorylensPURPOSE: To report 10 cases of delayed-onset acute intraocular inflammation following cataract extraction and posterior chamber implantation of the MemoryLens(R) intraocular lens (IOL). SETTING: John A. Moran Eye Center, Department of Ophthalmology, University of Utah, Salt Lake City, Utah, USA. MET...Memory Lens; Toxic Anterior Segment Syndrome; Retrospective Studies; adverse effects2000-12
138 Normann, Richard A.Background and bleaching adaptation in luminosity type horizontal cells in the isolated turtle retina1. The effects of background illumination and bleached photopigment on luminosity type horizontal cells were studied in the isolated turtle retina. 2. Background illumination, which produced less than 60% bleaching, hyperpolarized and desensitized the horizontal cells to a degree which depended upon...Turtles; Retina; Photoreceptors; Bleached photopigment; Dark Adaptation1990
139 Baehr, WolfgangGuanylyl cyclase activating protein. A calcium-sensitive regulator of phototransductionGuanylyl cyclase activating protein (GCAP1) has been proposed to act as a calcium-dependent regulator of retinal photoreceptor guanylyl cyclase (GC) activity. Using immunocytochemical and biochemical methods, we show here that GCAP1 is present in rod and cone photoreceptor outer segments where photo...Cloning, Molecular; DNA Primers; Molecular Sequence Data1995
140 Normann, Richard A.; Campbell, Patrick K.; Jones, Kelly E.100 electrode intracortical array: structural variabilityA technique has been developed for fabricating three dimensional "hair brush" electrode arrays from monocrystalline silicon blocks. Arrays consist of a square pattern of 100 penetrating electrodes, with 400 microns interelectrode spacing. Each electrode is 1.5mm in length and tapers from about 100 m...Microelectrode arrays; Stimulation; Micromachining1990
141 Olson, Randall J.Wound complications associated with incision enlargement for foldable intraocular lens implantation during cataract surgeryPURPOSE: To determine the relationship between various intraocular lens (IOL) types and the incidence of unwanted light images. SETTING: The Moran Eye Center, University of Utah, Salt Lake City, Utah, USA. METHODS: A telephone questionnaire was administered to 302 postoperative patients who had rece...Cararact Surgery; Incision Enlargement; Wound Complications; Vision Disorders2000-06
142 Frederick, Jeanne M.RNA interference gene therapy in dominant retinitis pigmentosa and cone-rod dystrophy mouse models caused by GCAP1 mutationsRNA interference (RNAi) knockdown is an efficacious therapeutic strategy for silencing genes causative for dominant retinal dystrophies. To test this, we used self-complementry (sc) AAV2/8 vector to develop an RNAi-based therapy in two dominant retinal degeneration mouse models. The allele-specific ...2014-01-01
143 Jones, Bryan W.Online parameter estimation in dynamic Markov Random Fields for image sequence analysisMarkov Random Fields (MRF) have proven to be extremely useful models for efficient and accurate image segmentation.Recent literature points to an increased effort towards incorporating useful priors (shape, geometry, context) in a MRF framework. However, topological priors, considered extremely cruc...2012-01-01
144 Bernstein, Paul S.Reflection-based imaging of macular pigment distributions in infants and childrenWe have developed a reflection-based capability of the RetCam® platform, an FDA-cleared pediatric retinal-imaging instrument, for the purpose of measuring macular pigment levels as well as their spatial distributions in infants and children. Our modifications include narrow-band blue-wavelength exc...2013-01-01
145 Normann, Richard A.Visual Neuroprosthetics: Functional Vision for the BlindResent progress in materials and microfabrication technologies have allowed researchers to reconsider the prospect of providing a useful visual sense to the profoundly blind. This will be accomplished by electrically stimulating their visual systems via an array of implanted microelectrodes. T...Visual Neuroprosthetics; Vision; Blindness1995-01
146 Olson, Randall J.; Crandall, Alan S.; Pingree, Michael F.Cataract surgery complications in 1 year at an academic institutionPURPOSE: To delineate all complication rates of cataract surgery and define normative rates, trends, and outliers as part of continuous quality management. SETTING: John A. Moran Eye Center, University of Utah Health Sciences Center, Salt Lake City, Utah, USA. METHODS: All cataract surgeries done at...Intraoperative Complications/Epidemiology; Adverse Effects; Cataract Surgery1999-05
147 Bernstein, Paul S.; Gellermann, WernerMacular pigment Raman detector for clinical applicationsClinical studies of carotenoid macular pigments (MP) have been limited by the lack of noninvasive, objective instruments. We introduce a novel noninvasive optical instrument, an MP Raman detector, for assessment of the carotenoid status of the human retina in vivo. The instrument uses resonant excit...Diagnosis, Computer-Assisted; Equipment Failure Analysis; Sensitivity and Specificity2004
148 Mamalis, Nick; Nilson, Christian D.Outbreak of toxic anterior segment syndrome following cataract surgery associated with impurities in autoclave steam moisture.BACKGROUND: Toxic anterior segment syndrome (TASS), a complication of cataract surgery, is a sterile inflammation of the anterior chamber of the eye. An outbreak of TASS was recognized at an outpatient surgical center and its affiliated hospital in December 2002. METHODS: Medical records of patients...Toxic anterior segment syndrome; cataract surgery; autoclave steam moisture2006
149 Fuhrmann, SabineExpression of CNTF receptor-alpha in chick violet-sensitive cones with unique morphologic properties.PURPOSE: Application of ciliary neurotrophic factor (CNTF) can rescue mature photoreceptors from lesion-induced and hereditary degeneration. In the chick retina, expression of the CNTF receptor is present in a subpopulation of photoreceptor cells. The present study was undertaken to identify the CNT...embryology; cytology2004
150 Baehr, WolfgangTrilateral tumors in four different lines of transgenic mice expressing SV40 T-antigenPURPOSE. A line of transgenic mice containing the simian virus (SV) 40 T-antigen (T-ag) gene driven by the beta-luteinizing hormone (BLH) promoter developed bilateral retinoblastoma and primitive neuroectodermal tumors (PNET) of the midbrain. Midbrain tumors arose from the subependymal layer of the ...Mice, Transgenic; Retinol-Binding Proteins; Eye Proteins1996
126 - 150 of 182