Search Results - "Harwerth, RS"

Neural Losses Correlated with Visual Losses in Clinical Perimetry by Harwerth, Ronald S, Carter-Dawson, Louvenia, Smith, Earl L., III, Barnes, George, Holt, William F, Crawford, Morris L. J

“…The validity of clinical perimetry for evaluation of the pathology of glaucoma is based on correlated losses in retinal ganglion cells and visual sensitivity,…”
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Ganglion Cell Losses Underlying Visual Field Defects from Experimental Glaucoma by Harwerth, Ronald S, Carter-Dawson, Louvenia, Shen, Fran, Smith, Earl L., III, Crawford, M. L. J

“…To investigate the relationship between ganglion cell losses and visual field defects caused by glaucoma. Behavioral perimetry and histology data were obtained…”
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The photopic negative response of the macaque electroretinogram: reduction by experimental glaucoma by Viswanathan, S, Frishman, LJ, Robson, JG, Harwerth, RS, Smith, EL, 3rd

“…To investigate the photopic flash electroretinograms (ERGs) of macaque monkeys in which visual field defects developed as a consequence of experimental…”
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Effect of Experimental Glaucoma in Primates on Oscillatory Potentials of the Slow-Sequence mfERG by Rangaswamy, Nalini V, Zhou, Wei, Harwerth, Ronald S, Frishman, Laura J

“…To determine the effect of experimental glaucoma in macaque monkeys on oscillatory potentials (OPs) in the slow-sequence multifocal electroretinogram (mfERG)…”
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Visual field defects and neural losses from experimental glaucoma by Harwerth, Ronald S., Crawford, M.L.J., Frishman, Laura J., Viswanathan, Suresh, Smith III, Earl L., Carter-Dawson, Louvenia

“…Glaucoma is a relatively common disease in which the death of retinal ganglion cells causes a progressive loss of sight, often leading to blindness. Typically,…”
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Vitreal Glutamate Concentration in Monkeys with Experimental Glaucoma by Carter-Dawson, Louvenia, Crawford, Morris L. J, Harwerth, Ronald S, Smith, Earl L., III, Feldman, Robert, Shen, F. Fran, Mitchell, Cheryl K, Whitetree, Amy

“…To investigate the hypothesis that the pathophysiology for the death of retinal ganglion cells in glaucoma involves excitotoxic effects from elevated…”
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Visual field defects and retinal ganglion cell losses in patients with glaucoma by Harwerth, Ronald S, Quigley, Harry A

“…To determine whether the structure-function relationships for glaucoma in humans and experimental glaucoma in monkeys are similar. The study was based on…”
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Ocular Dominance Column Width and Contrast Sensitivity in Monkeys Reared with Strabismus or Anisometropia by Crawford, Morris L. J, Harwerth, Ronald S

“…To study the relationship between the width of ocular dominance columns in primary visual cortex and spatial contrast sensitivity functions in monkeys with…”
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Glaucoma in Primates: Cytochrome Oxidase Reactivity in Parvo- and Magnocellular Pathways by Crawford, Morris L. J, Harwerth, Ronald S, Smith, Earl L., III, Shen, Fran, Carter-Dawson, Louvenia

“…To evaluate the differential effects of ganglion cell depletion from experimental glaucoma on the relative metabolic activities of neurons in the parvo (P)-…”
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Binocular Vision with Primary Microstrabismus by Harwerth, Ronald S, Fredenburg, Patricia M

“…Patients with primary microstrabismus have a high degree of binocularity, which suggests that their ocular misalignment may have a sensory rather than an…”
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Experimental Glaucoma in Primates: Changes in Cytochrome Oxidase Blobs in V1 Cortex by Crawford, Morris L. J, Harwerth, Ronald S, Smith, Earl L., III, Mills, Stephen, Ewing, Bryan

“…To evaluate the effects of ganglion cell depletion from experimental glaucoma on the relative metabolic activities of neurons in the cytochrome oxidase blobs…”
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Stereopsis is perturbed by vergence error by Ukwade, Michael T., Bedell, Harold E., Harwerth, Ronald S.

“…Fixation disparity or vergence noise produce instantaneous vergence errors. These errors are analogous to the imposition of a pedestal disparity, which is…”
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Temporal integration for stereoscopic vision by Harwerth, Ronald S., Fredenburg, Patricia M., Smith, Earl L.

“…With normal binocular vision, maximal stereoacuity requires an extended viewing duration, but the relationship between the critical viewing duration for…”
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Cortical Effects of Brief Daily Periods of Unrestricted Vision During Early Monocular Form Deprivation by Sakai, E, Bi, H, Maruko, I, Zhang, B, Zheng, J, Wensveen, J, Harwerth, R. S, Smith, E. L., III, Chino, Y. M

“…College of Optometry, University of Houston, Houston, Texas Submitted 12 January 2006; accepted in final form 24 January 2006 Experiencing daily brief periods…”
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Glutathione content is altered in Müller cells of monkey eyes with experimental glaucoma by Carter-Dawson, Louvenia, Shen, F.Fran, Harwerth, Ronald S., Crawford, M.L.J., Smith, Earl L., Whitetree, Amy

“…Extracellular levels of glutamate are thought to be increased in glaucoma and thus contribute to retinal damage. An increase in glutamate concentration or…”
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Residual Binocular Interactions in the Striate Cortex of Monkeys Reared With Abnormal Binocular Vision by Smith, Earl L., III, Chino, Yuzo M, Ni, Jinren, Cheng, Han, Crawford, M.L.J, Harwerth, Ronald S

“…Earl L. Smith III 1 , Yuzo M. Chino 1 , Jinren Ni 1 , Han Cheng 1 , M.L.J. Crawford 2 , and Ronald S. Harwerth 1 1  College of Optometry, University of…”
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Directional Bias of Neurons in V1 and V2 of Strabismic Monkeys: Temporal-to-Nasal Asymmetry? by Watanabe, Ichiro, Bi, Hua, Zhang, Bin, Sakai, Eiichi, Mori, Takafumi, Harwerth, Ronald S, Smith, Earl L., III, Chino, Yuzo M

“…Strabismus that develops shortly after birth is known to cause temporal-to-nasal eye movement asymmetries under monocular viewing. The neural mechanisms…”
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The scotopic electroretinogram of macaque after retinal ganglion cell loss from experimental glaucoma by Frishman, LJ, Shen, FF, Du, L, Robson, JG, Harwerth, RS, Smith, EL, 3rd, Carter- Dawson, L, Crawford, ML

“…This study describes the dark-adapted electroretinograms (ERGs) of macaque monkeys with severe visual field defects and substantial retinal ganglion cell loss…”
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Stereoscopic depth magnitude estimation: effects of stimulus spatial frequency and eccentricity by Cisarik, Patricia M., Harwerth, Ronald S.

“…To determine the effects of stimulus spatial frequency and retinal eccentricity on the perception of depth magnitude derived from disparity cues alone,…”
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Binocular Deficits Associated With Early Alternating Monocular Defocus. I. Behavioral Observations by Wensveen, Janice M, Harwerth, Ronald S, Smith, Earl L., III

“…University of Houston, College of Optometry, Houston, Texas 77204-2020 Submitted 28 October 2002; accepted in final form 1 August 2003 To study the binocular…”
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