Filters: Collection: "ir_uspace"
1 - 25 of 8
| Creator | Title | Description | Subject | Date | ||
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Olson, Randall J. | Clinical comparison of single-piece and three-piece truncated hydrophobic acrylic intraocular lenses | PURPOSE: 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 Acuity | 2003-10 |
| 2 |
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Olson, Randall J. | Clinical experience with 21-gauge manual microphacoemulsification using Sovereign WhiteStar Technology in eyes with dense cataract | PURPOSE: To present a series of patients who had 21-gauge microphacoemulsification using Sovereign WhiteStar technology. SETTING: John A. Moran Eye Center, University of Utah School of Medicine, Salt Lake City, Utah, USA. METHODS: Eighteen consecutive patients with cataracts judged to be 3+ or 4+ on... | Cataract; Microsurgery; Phacoemulsification; Postoperative Complications; Visual Acuity | 2004-01 |
| 3 |
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Faugeras, Olivier Dominique | Digital color image processing and psychophysics within the framework of a human visual model | A three-dimensional homomorphic model of human color vision based on neurophysiological and psychophysical evidence is presented. This model permits the quantitative definition of perceptually important parameters such as brightness. saturation, huo and strength. By modelling neural interaction in t... | Human visual model; Neurophysiological evidence; Psychophysical evidence | 1977 |
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Olson, Randall J.; Samore, Matthew H.; Pace, Nathan L. | Dysphotopsia in phakic and pseudophakic patients: incidence and relation to intraocular lens type(2) | PURPOSE: 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... | Cataract Extraction; Visual Acuity; Lenses, Intraocular; Lens Implantation, Intraocular | 2000-06 |
| 5 |
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Normann, Richard A.; Horch, Kenneth W.; Cha, Kichul | Mobility performance with a pixelized vision system | A visual prosthesis, based on electrical stimulation of the visual cortex, has been suggested as a means for partially restoring functional vision in the blind. The prosthesis would create a pixelized visual sense consisting of punctate spots of light (phosphenes). The present study investigated the... | Visual Prosthesis; Mobility; Phosphene Simulator | 1992 |
| 6 |
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Olson, Randall J.; Pingree, Michael F.; Lundergan, Maureen K. | Penetrating keratoplasty for keratoconus: a long-term review of results and complications | PURPOSE: 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; Astigmatism | 2000-07 |
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Horch, Kenneth W.; Normann, Richard A. | Simulation of a phosphene field based visual prosthesis | A visual prosthesis for the blind based upon electrical stimulation of the visual cortex requires the development of an array of electrodes. To establish design specifications for such an electrode array, we have conducted psychophysical experiments with normally sighted subjects wearing a portable... | Visual prosthesis; Phosphene simulator | 1990 |
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Swallow, Charles E.; Tsuruda, Jay S.; Digre, Kathleen B.; Glaser, Matthew J.; Davidson, H. Christian; Harnsberger, H. Ric | Terson syndrome: CT evaluation in 12 patients. | PURPOSE: Terson syndrome may be overlooked in the acute setting and often requires ophthalmologic intervention to prevent long-term visual loss. In this syndrome, vitreous or retinal hemorrhage results from an abrupt rise in intracranial pressure, leading to retinal venous hypertension and intraocul... | Retinal Hemorrhage; Visual Acuity; Vitreous Hemorrhage | 1998-04 |
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