scholarly journals Objective Assessment of the Effect of Optical Treatment on Magnocellular and Parvocellular-biased Visual Response in Anisometropic Amblyopia

2020 ◽  
Vol 61 (2) ◽  
pp. 21
Author(s):  
Zitian Liu ◽  
Zidong Chen ◽  
Yunzhi Xu ◽  
Lei Feng ◽  
Junpeng Yuan ◽  
...  
Keyword(s):  
Objective Assessment ◽  
Visual Response ◽  
Anisometropic Amblyopia ◽  
Optical Treatment

scholarly journals Optical Treatment of Strabismic and Combined Strabismic–Anisometropic Amblyopia

Ophthalmology ◽  
2012 ◽  
Vol 119 (1) ◽  
pp. 150-158 ◽  
Author(s):  
Susan A. Cotter ◽  
Nicole C. Foster ◽  
Jonathan M. Holmes ◽  
B. Michele Melia ◽  
David K. Wallace ◽  
...  
Keyword(s):  
Anisometropic Amblyopia ◽  
Optical Treatment

scholarly journals Binocular benefits of optical treatment in anisometropic amblyopia

2018 ◽  
Vol 18 (4) ◽  
pp. 6 ◽  
Author(s):  
Jiafeng Wang ◽  
Lixia Feng ◽  
Yonghua Wang ◽  
Jiawei Zhou ◽  
Robert F. Hess
Keyword(s):  
Anisometropic Amblyopia ◽  
Optical Treatment

The Theoretical Contrast in Scanning and Conventional High Resolution Microscopes

1969 ◽  
Vol 27 ◽  
pp. 170-171
Author(s):  
E. Zeitler ◽  
M. G. R. Thomson
Keyword(s):  
Small Volume ◽  
Volume Element ◽  
Optical Processing ◽  
Image Construction ◽  
Object Interaction ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
Optical Treatment ◽  
Electron Microscopes ◽  
Intensity Contrast

In the formation of an image each small volume element of the object is correlated to an areal element in the image. The structure or detail of the object is represented by changes in intensity from element to element, and this variation of intensity (contrast) is determined by the interaction of the electrons with the specimen, and by the optical processing of the information-carrying electrons. Both conventional and scanning transmission electron microscopes form images which may be considered in this way, but the mechanism of image construction is very different in the two cases. Although the electron-object interaction is the same, the optical treatment differs.

Chromatic aberration and low-voltage SEM

1987 ◽  
Vol 45 ◽  
pp. 546-547
Author(s):  
Zhifeng Shao ◽  
A.V. Crewe
Keyword(s):  
Electron Energy ◽  
Low Voltage ◽  
Spherical Aberration ◽  
Chromatic Aberration ◽  
Primary Electron ◽  
Probe Size ◽  
Non Local ◽  
Optical Treatment ◽  
Electron Microscopes ◽  
Scanning Electron Microscopes

For scanning electron microscopes, it is plausible that by lowering the primary electron energy, one can decrease the volume of interaction and improve resolution. As shown by Crewe /1/, at V0 =5kV a 10Å resolution (including non-local effects) is possible. To achieve this, we would need a probe size about 5Å. However, at low voltages, the chromatic aberration becomes the major concern even for field emission sources. In this case, δV/V = 0.1 V/5kV = 2x10-5. As a rough estimate, it has been shown that /2/ the chromatic aberration δC should be less than ⅓ of δ0 the probe size determined by diffraction and spherical aberration in order to neglect its effect. But this did not take into account the distribution of electron energy. We will show that by using a wave optical treatment, the tolerance on the chromatic aberration is much larger than we expected.

Objective Assessment of Hearing in Children: Update on Procedures and Protocols

2011 ◽  
Vol 21 (2) ◽  
pp. 50-58
Author(s):  
James W. Hall ◽  
Anuradha R. Bantwal
Keyword(s):  
Psychosocial Development ◽  
Otoacoustic Emissions ◽  
Objective Assessment ◽  
Behavioral Assessment ◽  
Auditory Brainstem ◽  
Test Battery ◽  
Auditory Evoked Responses ◽  
Brainstem Response ◽  
Assessment Techniques ◽  
Pediatric Populations

Early identification and diagnosis of hearing loss in infants and young children is the first step toward appropriate and effective intervention and is critical for optimal communicative and psychosocial development. Limitations of behavioral assessment techniques in pediatric populations necessitate the use of an objective test battery to enable complete and accurate assessment of auditory function. Since the introduction of the cross-check principle 35 years ago, the pediatric diagnostic test battery has expanded to include, in addition to behavioral audiometry, acoustic immittance measures, otoacoustic emissions, and multiple auditory evoked responses (auditory brainstem response, auditory steady state response, and electrocochleography). We offer a concise description of a modern evidence-based audiological test battery that permits early and accurate diagnosis of auditory dysfunction.

Fifth Edition: the New Standard

2000 ◽  
Vol 5 (6) ◽  
pp. 1-7
Author(s):  
Christopher R. Brigham ◽  
James B. Talmage ◽  
Leon H. Ensalada
Keyword(s):  
Musculoskeletal System ◽  
Medical Information ◽  
Objective Assessment ◽  
Scientific Data ◽  
Practical Application ◽  
Fourth Edition ◽  
Appropriate Use ◽  
Medical Evaluation ◽  
Single Set

Abstract The AMA Guides to the Evaluation of Permanent Impairment (AMA Guides), Fifth Edition, is available and includes numerous changes that will affect both evaluators who and systems that use the AMA Guides. The Fifth Edition is nearly twice the size of its predecessor (613 pages vs 339 pages) and contains three additional chapters (the musculoskeletal system now is split into three chapters and the cardiovascular system into two). Table 1 shows how chapters in the Fifth Edition were reorganized from the Fourth Edition. In addition, each of the chapters is presented in a consistent format, as shown in Table 2. This article and subsequent issues of The Guides Newsletter will examine these changes, and the present discussion focuses on major revisions, particularly those in the first two chapters. (See Table 3 for a summary of the revisions to the musculoskeletal and pain chapters.) Chapter 1, Philosophy, Purpose, and Appropriate Use of the AMA Guides, emphasizes objective assessment necessitating a medical evaluation. Most impairment percentages in the Fifth Edition are unchanged from the Fourth because the majority of ratings currently are accepted, there is limited scientific data to support changes, and ratings should not be changed arbitrarily. Chapter 2, Practical Application of the AMA Guides, describes how to use the AMA Guides for consistent and reliable acquisition, analysis, communication, and utilization of medical information through a single set of standards.

390: The Use of Validated Scoring Systems to Improve Objective Assessment of Comorbid Risk in Men with Localised Prostate Cancer

2004 ◽  
Vol 171 (4S) ◽  
pp. 102-103
Author(s):  
Rajinder Singh ◽  
Declan Cahill ◽  
Rick Popert ◽  
Ronald Beaney ◽  
Anthony Wierzbicki ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Objective Assessment ◽  
Scoring Systems

Canadian Objective Assessment of Life Skills

2013 ◽  
Author(s):  
Stephanie A. McDermid Vaz ◽  
R. Walter Heinrichs ◽  
Ashley A. Miles ◽  
Narmeen Ammari ◽  
Suzanne Archie ◽  
...  
Keyword(s):  
Life Skills ◽  
Objective Assessment

The Anticoagulant Effect of Heparinoid Org 10172 During Haemodialysis: An Objective Assessment

1986 ◽  
Vol 55 (02) ◽  
pp. 271-275 ◽  
Author(s):  
Helen Ireland ◽  
D A Lane ◽  
Angela Flynn ◽  
E Anastassiades ◽  
J R Curtis
Keyword(s):  
Renal Failure ◽  
Bolus Dose ◽  
Bolus Injection ◽  
Objective Assessment ◽  
Factor Xa ◽  
Fibrin Clot ◽  
Natural Origin ◽  
Fibrin Formation ◽  
Single Bolus Injection

SummaryThe heparinoid of natural origin Org 10172 has anti-factor Xa activity but minimal anti-thrombin activity, and little effect upon broad spectrum assays such as the KCCT in vitro. Its anticoagulant effects have been compared to those of commercial heparin in 7 patients undergoing haemodialysis for chronic renal failure. Commercial heparin was administered in a dose (5,000 iu bolus + 1,500 iu/hour continuous iv infusion) previously shown to inhibit fibrin formation during haemodialysis. This produced mean anti-factor Xa levels in plasma between 0.7-1.0 iu/ml and largely suppressed fibrin formation for 5 h dialysis measured as mean FPA levels in plasma. Administration of Org 10172 as a bolus of 1,350 anti-factor Xa u or 2,000-2,400 anti-factor Xa u produced plasma anti-factor Xa levels of less than 0.5 u/ml and allowed fibrin clot and FPA generation during dialysis. Org 10172 administered as a bolus dose of 4,000-4,800 anti-factor Xa u produced mean anti-factor Xa levels of greater than 0.5 u/ml, allowed dialysis of 6 patients for 5 h and appreciably suppressed FPA generation during dialysis, with little effect on the KCCT.It is concluded that the anti-factor Xa activity of Org 10172 may reflect its ability to inhibit fibrin during dialysis and that single bolus injection of Org 10172 may be a useful alternative method of achieving anticoagulation.

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