The tilted disc syndrome.
Explore the source record for details and available documents.
Diabetes Complications↗
Biomedical subjects
L Semes
Publications and source records attributed to L Semes.
Association between eye and hand dominance and hitting, fielding and pitching skill among players of the Southern Baseball League.
BACKGROUND: The relationship between eye dominance and batting skill in baseball has been investigated, but conflicting results have been obtained. In addition, little attention has been given to the relationship, if any, between eye dominance and fielding and pitching skill. METHODS: A vision screening of 215 professional baseball players in the Southern Baseball League was performed and the eye dominance of these players was determined by a sighting test. Handedness for batting, fielding, and pitching was determined by history. RESULTS: The screening revealed that 66 percent of players were right-eye dominant and that, of 92 players who met the criteria established to qualify for the league batting championship, 60 percent had matched dominance of eye and hand. When official league batting averages were obtained for these 92 players, it was found that there was no statistically significant difference between batters with matched dominance (.278 mean batting average). For the 149 fielders in the league, no statistically significant differences based on eye dominance were found for fielding average (.893 matched dominance, .864 crossed dominance); for the 89 pitchers, a similar result was obtained. Pitchers were also evaluated with respect to eye dominance and earned run average, but no significant difference was found (3.91 matched dominance, 4.03 crossed dominance). CONCLUSIONS: Results indicate that there is no association between eye dominance, and hitting, fielding, or pitching skill in baseball.
Baseball↗
The OSHA bloodborne pathogens standard. Implications for optometric practice.
The Occupational Safety and Health Act empowers the Occupational Safety and Health Administration (OSHA) to establish a standard when it determines that a significant risk to employees exists. Leading to the OSHA bloodborne pathogen Standard were the following events: recognition of Hepatitis B virus as an occupational hazard where blood and body fluids are handled. Similarly, the human immunodeficiency virus (HIV) had been shown to infect those exposed to blood and body fluids, and OSHA was petitioned by two unions to require employers to require Hepatitis B vaccine free of charge and to mandate general infection control practices as recommended by the Centers for Disease Control (CDC) as early as 1983. OSHA determined that the risk of contracting Hepatitis B virus and HIV was significant and that the final bloodborne pathogens Standard would substantially reduce that risk.
Blood-Borne Pathogens↗
Diagnosis and primary care management of tear film deficiencies.
The tear film is a complex physical and biochemical structure. It functions to lubricate and protect the ocular surface from a variety of insults. Disorders of the tear film can lead to patient complaints as well as observable clinical signs. Combining clinical observations with a knowledge of the dynamic interaction of the tear film and the ocular surface should allow the practitioner to develop a management plan for symptomatic patients. This article details the many tests available for assessing tear film and ocular surface integrity, and discusses means of managing complications.
Humans↗
Angioid streaks and AC hemoglobinopathy--a newly discovered association.
It is estimated that approximately 2 percent of African-Americans possess one gene for C hemoglobin. This is usually demonstrated on hemoglobin electrophoresis. Hemoglobin C trait (AC hemoglobinopathy) is considered a clinically benign condition; there are no characteristic physical abnormalities. Angioid streaks in the ocular fundus represent a progressive, bilateral, degenerative disorder characterized by breaks in Bruch's membrane. The pathogenesis of angioid streaks in the hemoglobinopathies is thought to be linked to iron deposition in Bruch's membrane. This report describes what is believed to be the first reported case of angioid streaks associated with hemoglobin C trait.
Angioid Streaks↗
Something new under the sun.
Ultraviolet radiation can exert adverse acute and chronic effects on many ocular tissues, including the lens. Chronic exposure to ultraviolet B wavelengths has been linked to cortical cataracts, and posterior subcapsular cataracts have likewise been associated with the chronic effects of ultraviolet radiation. Aphakic patients require protection from the injurious effects of ultraviolet radiation, and clinicians must be familiar with the transmittance guidelines for ultraviolet-protective eyewear and prescribe lenses that absorb injurious wavelengths.
Cataract↗
UV-A absorbing characteristics of commercial sunglasses intended for recreational and general use.
Ultraviolet radiation (UVR) is known to cause photokeratitis with acute symptoms. It also has been demonstrated that UVR has the potential to accelerate human cataractogenesis. For certain recreational pursuits, protection from specific UVR wavebands is important to the prescriber, the dispenser, and the patient or consumer of sunglasses. By knowing the ultraviolet absorbance characteristics of lens materials, practitioners would be able to advise their patients. In this study, the UV-A spectra of pairs of sunglasses purchased anonymously were measured. The results indicate that manufacturers' claims of UVR protection, or absorbance, are valid with respect to the UV-A waveband. No association between UV-A absorbance and lens material or cost was established.
Absorption↗
An alternative gonioscopy and fundus contact lens protocol.
The clinical procedures for gonioscopy and fundus contact lens examination traditionally have required the use of a topical anesthetic and an interface solution. I have replaced the topical anesthetic and interface solution with a disposable contact lens. The alternative protocol was performed on 18 volunteers, none of whom showed any significant adverse effects of the procedure. The pre- and post-slit lamp microscopic results are discussed in addition to the advantages and potential pitfalls of the new protocol.
Adult↗
Clinical and legal considerations in the diagnosis and management of ocular tumors.
Although some ocular tumors are symptomatic, others can be silent. An examination routine is suggested which could reveal such silent intraocular lesions, and special diagnostic procedures for patients with suspicious intraocular lesions are presented. The legal responsibility of optometrists for the detection of silent and symptomatic ocular tumors is described also, and the standard of care for patients at high risk for tumors is discussed.
Brain Neoplasms↗
Dilation and diagnostic irrigation of the lacrimal drainage system.
The anatomy of the lacrimal excretory system provides a logical basis for evaluation of the physiological drainage of tears. A review of the methods for examining the lacrimal drainage passages with emphasis on the techniques of punctal dilation and diagnostic irrigation is presented.
Diagnostic Tests, Routine↗
Risk of loss of Soflens during water skiing.
Ten soft contact lens wearers, who were also water skiers, each skied a minimum of ten times while wearing soft contact lenses (Bausch and Lomb Soflens). There was good subjective comfort and visual acuity for all subjects. Data relating to falls while skiing were recorded for each trial (total 119). No lenses were lost by any participant even though in ninety-one (76%) of the 119 trials, the skier's head became submerged. The data suggest that the risk of Soflens loss following a water-skiing fall is extremely low.
Adult↗
The validity of labeled parameters of aphakia-correcting soft contact lenses.
This study examines the validity of labeled parameters of aphakia-correcting soft contact lenses. The Nikon Projection Lensometer (NPL) and the Hydro-Vue Soft Lens Analyzer (HSLA) were used by two independent inspectors to measure 51 aphakia-correcting lenses. The contact lens power, diameter, and base curve were measured by each of the inspectors and compared to the labeled parameters. All parameter relations that were analyzed revealed that measurements made by the inspectors were not statistically different (p greater than 0.05) from each other and that their combined measurements were not statistically different (p greater than 0.05) from the labeled values.
Analysis of Variance↗