Open Access. Powered by Scholars. Published by Universities.®

Optometry Commons

Open Access. Powered by Scholars. Published by Universities.®

363 Full-Text Articles 514 Authors 221,385 Downloads 29 Institutions

All Articles in Optometry

Faceted Search

363 full-text articles. Page 1 of 13.

The Role Of Tinted Lenses In The Perception Of Color Deficiency, Ahlam Alenazi 2018 Pacific University

The Role Of Tinted Lenses In The Perception Of Color Deficiency, Ahlam Alenazi

College of Optometry

Purpose: Many different approaches have been used to improve the color perception in patients with color deficiency. Currently, filters and tinted contact lenses are the most widely-available method to enhance color perception. Filters have been shown to help patients to pass pseudoisochromatic color tests, to better perform their daily activities, and enable them to better enjoy nature and art as well.

The aim of this study was to evaluate the efficacy of monocular Neuchroma tinted lenses in improving the color perception for those with color vision deficiency. The specific combination of tints was selected to mimic the neutral (black) point ...


College Of Optometry Senior Awards Dinner Dance, Nova Southeastern University 2018 Nova Southeastern University

College Of Optometry Senior Awards Dinner Dance, Nova Southeastern University

NSU Commencement Programs

No abstract provided.


Vision Therapy Rehabilitation Of Post-Concussion Visual Impairments, Sarah Morton 2018 University of Wyoming

Vision Therapy Rehabilitation Of Post-Concussion Visual Impairments, Sarah Morton

Honors Theses AY 17/18

Concussion is a common, mild form of traumatic brain injury that is caused by blunt force trauma to the head. Concussion can be caused by a wide variety of situation, commonly sports collisions, automobile accidents, and falls. Signs of concussion include a loss of consciousness, temporary amnesia, and disorientation. Severe concussion can result in visual impairments such as blurred vision, light sensitivity, attention deficits, impaired memory, and double vision. Vision therapy can significantly or completely improve many of these visual impairments. Vision therapy is a series of procedures monitored by an optometrist that are designed to improve visual movements and ...


Proposing An Alternative: Analyzing Patient Perspective On Recycled Versus Ready-Made Glasses As A Global Refractive Error Solution, Sonam Narayan 2018 Pacific University

Proposing An Alternative: Analyzing Patient Perspective On Recycled Versus Ready-Made Glasses As A Global Refractive Error Solution, Sonam Narayan

College of Optometry

Purpose: Refractive error impairs a large percentage of the world population and many populations do not have access to eye health care services. VOSH groups visit these underserved areas providing comprehensive eye health care, including prescribing options for refractive error correction. This study analyzes two of those options, recycled and ready-made spectacles, and details patient preferences.

Methods: 94 patients volunteered to be part of a survey process, that had patients compare and select recycled or ready-made glasses as their preference in independent questions regarding better vision, comfort, style, and overall choice of spectacles to take home.

Results: Statistical analysis showed ...


Parental Attitudes To Myopia: A Key Agent Of Change For Myopia Control?, Saoirse McCrann, Ian Flitcroft, Kevin Lalor, John S. Butler, Aaron Bush, James Loughman 2018 Dublin Institute of Technology

Parental Attitudes To Myopia: A Key Agent Of Change For Myopia Control?, Saoirse Mccrann, Ian Flitcroft, Kevin Lalor, John S. Butler, Aaron Bush, James Loughman

Articles

Purpose

With the increasing prevalence in myopia there is growing interest in active myopia prevention. This study aims to increase our understanding of parental attitudes to myopia development and control, as a means to inform future health planning and policy. It evaluates, for the first time, the attitude of parents to myopia and its associated risks, as well as assessing the exposure of Irish children to environmental factors that may influence their risk profile for myopia development.

Methods

Parents of 8–13 year old children in eight participating schools completed a questionnaire designed to assess their knowledge of and attitudes ...


Buddy Gets His First Pair Of Glasses, Tawnya Pastuck, Hilary Webb 2018 Pacific University

Buddy Gets His First Pair Of Glasses, Tawnya Pastuck, Hilary Webb

Bee Tree Books

Going to the eye doctor for the first time can be scary. That is why Buddy and his best friend Cody have shared their eye doctor adventure. While reading Buddy's book, children will be exposed to many common procedures and the positive outcome of getting an eye examination.


Student Handbook 2018-2019, Nova Southeastern University 2018 Nova Southeastern University

Student Handbook 2018-2019, Nova Southeastern University

Health Professions Divisions Course Catalogs

No abstract provided.


Investigation Of Wavenumber Calibration For Raman Spectroscopy Using A Polymer Reference, Dongyue Liu, Hugh Byrne, Luke O'Neill, Bryan M. Hennelly 2018 National University of Ireland, Maynooth

Investigation Of Wavenumber Calibration For Raman Spectroscopy Using A Polymer Reference, Dongyue Liu, Hugh Byrne, Luke O'Neill, Bryan M. Hennelly

Conference papers

Raman spectroscopy is an optical technique that can be used to evaluate the biomolecular composition of tissue and cell samples in a real-time and non-invasive manner. Subtle differences between datasets of spectra obtained from related cell groups can be identified using multivariate statistical algorithms. Such techniques are highly sensitive to small errors, however, and, therefore, the classification sensitivity of Raman spectroscopy can be significantly impacted by miscalibration of the optical system due to small misalignments of the optical elements and/or variation in ambient temperature. Wavenumber calibration is often achieved by recording the spectrum from a wavenumber reference standard, such ...


Health Care Priorities In Developing Countries: A Systematic Review, Heather McKay 2018 James Madison University

Health Care Priorities In Developing Countries: A Systematic Review, Heather Mckay

Senior Honors Projects, 2010-current

Countries around the globe are struggling to find an affordable health care system. Developing countries have it particularly challenging with a lack of health care professionals and funding to spend on health care. This systematic review analyzes five developing countries’ (China, Dominican Republic, Ghana, Peru and Turkey) health care systems to find what is working well and what needs improvement. The main findings that these countries could adopt are requiring medical student graduates to do their residency in rural areas, giving more power of health care to local governments rather than the federal government, making insurance companies non-profit, and providing ...


A Comprehensive Experimental Study Of Whispering Gallery Modes In A Cylindrical Micro-Resonator Excited By A Tilted Fiber Taper, Vishnan Kavungal, Gerald Farrell, Qiang wu, Arun Mallik, Yuliya Semenova 2018 Dublin Institute of Technology

A Comprehensive Experimental Study Of Whispering Gallery Modes In A Cylindrical Micro-Resonator Excited By A Tilted Fiber Taper, Vishnan Kavungal, Gerald Farrell, Qiang Wu, Arun Mallik, Yuliya Semenova

Articles

Whispering gallery modes (WGMs) excitation in a cylindrical microresonator formed by a section of silica optical fiber has been studied. Evanescent light coupling into the microresonator is realized using a tapered optical fiber, fabricated by a microheater brushing technique. Several types of silica fibers with different diameters are studied as microresonators, and the influence of the resonator's diameter on the excitation of WGMs is investigated. The excitation of WGMs in a cylindrical fiber resonator were studied with changes to the tilt angle between the microcylinder and the fiber taper in the range of angles from a perpendicular position (0 ...


Expanding The Traditional Role Of Optometry: Current Practice Patterns And Attitudes To Enhanced Glaucoma Services In Ireland, Catriona Barrett, James Loughman 2018 Dublin Institute of Technology

Expanding The Traditional Role Of Optometry: Current Practice Patterns And Attitudes To Enhanced Glaucoma Services In Ireland, Catriona Barrett, James Loughman

Articles

Purpose: To investigate current diagnostic equipment availability and usage for glaucoma casefinding within community optometric practice, and to explore optometrists’ attitudes towards an enhanced scope of clinical practice. Methods: An anonymous survey was developed, validated, and distributed to all optometrists in Ireland. Results: 199 optometrists (27% of registrants) responded to the survey. 87% had access to the traditional triad of tests necessary to conduct adequate glaucoma case finding. Standard automated perimetry was the most commonly absent (13%) of the three essential screening tests. 64% of respondents indicated that monocular direct ophthalmoscopy was their first choice technique for fundus examination. 47 ...


Glaucoma Referral Refinement In Ireland: Managing The Sensitivity-Specificity Paradox In Optometric Practice, Catriona Barrett, O'Brien Colm, James Loughman 2018 Dublin Institute of Technology

Glaucoma Referral Refinement In Ireland: Managing The Sensitivity-Specificity Paradox In Optometric Practice, Catriona Barrett, O'Brien Colm, James Loughman

Articles

Purpose: Glaucoma referral refinement (GRR) has pr ven a successful demand management strategy for glaucoma suspect cases in the United Kingdom (UK). A GRR clinic was established in Dublin, Ireland to investigate the clinical viability of this pathway outside the UK's National Health Service (NHS) structures, and away from the influence of National Institute for Clinical Excellence (NICE) guidance.


Development Of Sensitive Holographic Devices For Physiological Metal Ion Detection, Sabad-e- Gul, Suzanne Martin, John Cassidy, Izabela Naydenova 2017 Dublin Institute of Technology

Development Of Sensitive Holographic Devices For Physiological Metal Ion Detection, Sabad-E- Gul, Suzanne Martin, John Cassidy, Izabela Naydenova

Conference Papers

The development of selective alkali metal ions sensors in particular is a subject of significant interest. In this respect, the level of blood electrolytes, particularly H+, Na+, K+ and Cl- , is widely used to monitor aberrant physiologies associated with pulmonary emphysema, acute and chronic renal failure, heart failure, diabetes. The sensors reported in this paper are created by holographic recording of surface relief structures in a self-processing photopolymer material. The structures are functionalized by ionophores dibenzo-18-crown-6 (DC) and tetraethyl 4-tert-butylcalix[4]arene (TBC) in plasticised polyvinyl chloride (PVC) matrix. Interrogation of these structures by light allows indirect measurements of chemical ...


Contrast Sensitivity Testing In Normal Vision: Performance With Letter Vs. Continuous Text, Kristen Davis, Marc Taub, Patricia Cisarik 2017 Southern College of Optometry

Contrast Sensitivity Testing In Normal Vision: Performance With Letter Vs. Continuous Text, Kristen Davis, Marc Taub, Patricia Cisarik

Interprofessional Optometry

Introduction: Contrast sensitivity is a visual element used in optometric examinations to help assess visual capacity. This study compared two formats of contrast sensitivity tests, ETDRS Letters and Continuous Text.

Methods: Contrast sensitivity was measured in 75 subjects, who met inclusion criteria, using the Adult Near Contrast Test. Patients’ verbal readings provided data for the formats at five contrast levels. Results: Average visual acuity and number of lines/paragraphs read correctly decreased with decreasing contrast. ANOVAs showed significant differences by contrast level in total words and total letters (ps< 0.001) and a Pearson correlation gave high correlations between the contrast sensitivity readings of the two formats except at 100% contrast (ps< 0.05; p= 0.69).

Conclusion: Analysis revealed that contrast sensitivity readings from the different formats ...


Book Review: Compendium Of Works On Visual Rehabilitation, Volume I, James Kundart 2017 Pacific University

Book Review: Compendium Of Works On Visual Rehabilitation, Volume I, James Kundart

Interprofessional Optometry

No abstract provided.


Focal Loss Volume Best Differentiates Eyes With Afferent Pupillary Defect, Eulogio Besada, Barry J. Frauens, Rim Makhlouf, Diana Shechtman, Julie Rodman, Marlon Demeritt, Patrick Hardigan 2017 Nova Southeastern University College of Optometry

Focal Loss Volume Best Differentiates Eyes With Afferent Pupillary Defect, Eulogio Besada, Barry J. Frauens, Rim Makhlouf, Diana Shechtman, Julie Rodman, Marlon Demeritt, Patrick Hardigan

Interprofessional Optometry

Purpose: To quantify the specificity and sensitivity of RTVue-100, Optovue parameters at determining the presence of a relative afferent pupillary defect (RAPD) by coupling their values with the instrument normative data base (NDB) and the presence of a RAPD. To generate the distribution for the focal loss volume (FLV) percentage, by coupling its value to the instrument NDB and presence of a RAPD.

Methods: Forty one subjects with a RAPD and glaucomatous or non-glaucomatous optic neuropathy participated. A neutral density filter bar was used to estimate the RAPD. The specificity and sensitivity of all parameters was analyzed using Fisher’s ...


Assessment Of Enchroma Filter For Correcting Color Vision Deficiency, Nawaf Almutairi, James Kundart, Naganathan Muthuramalingam, John Hayes, Karl Citek, Saad Aljohani 2017 Pacific University

Assessment Of Enchroma Filter For Correcting Color Vision Deficiency, Nawaf Almutairi, James Kundart, Naganathan Muthuramalingam, John Hayes, Karl Citek, Saad Aljohani

College of Optometry

Purpose: Color vision deficiency (CVD) especially the Red-Green type (RG), affects 8% of the male and 0.5% of the female population. There is no cure for color deficiency. However, there are specially-tinted lenses marketed to enhance the color contrast for CVD individuals. Recently, EnChroma Filters claim to enhance color perception. The aim of this study was to examine EnChroma Cx-14, red, and green filters subjectively on subjects with RG CVD.

Methods: Nine males and one female (aged 19 – 52 years) with RG CVD were recruited. Five were severe deutans, two moderate deutans, and two were severe protans. Subjective responses ...


Basic Vision Research With Clinical Applications And Science Education Assessments, Andrew Wilson 2017 The University of Maine

Basic Vision Research With Clinical Applications And Science Education Assessments, Andrew Wilson

Electronic Theses and Dissertations

Visual Acuity (VA) examinations are one of the most commonly conducted medical assessment throughout the world. Recent advances in computer technology allows for new forms of visual assessment to be conducted. In Part I of this thesis I demonstrate the capability of an automated computer program named VISION to assess human visual acuities. Different color combinations of an object against a background emitted from a computer screen are used to examine a variety of human color vision acuities. Results indicated a large difference in acuity scores between human subjects tested with these different color combinations. A single human subject exhibits ...


Competency-Based Assessment Of Refractive Error Measurement In A Mozambique Optometry School, Kajal Shah, Kovin Naidoo, Luigi Bilotto, James Loughman 2017 Dublin Institute of Technology

Competency-Based Assessment Of Refractive Error Measurement In A Mozambique Optometry School, Kajal Shah, Kovin Naidoo, Luigi Bilotto, James Loughman

Articles

Background: The aims of this study were to develop a process for assessing refractive error management competence among the first two cohorts of students in a new optometry program at Unilúrio in Mozambique and to understand the effectiveness of implementing the process in the context of a low resource environment. Methods: The assessment methods were developed using information from a literature review and a focus group discussion and implemented on 15 students. Results: The exams consisted of direct observation of two patients, short-answer questions and a structured oral examination. Conclusion: The use of existing checklists and rating skills helped to ...


Latanoprost And Timolol In Hydrogel Soft Drug-Dispensing Contact Lenses: A Comparative Analysis, Neha Potdar 2017 Virginia Commonwealth University

Latanoprost And Timolol In Hydrogel Soft Drug-Dispensing Contact Lenses: A Comparative Analysis, Neha Potdar

Virginias Collegiate Honors Council Conference

Glaucoma patients only can instill glaucoma eye drops. This results in 1-7% absorption of the medication. Surveys show that patients forget to take their medication and have difficulty inserting their eye drops. Researchers at the Massachusetts Eye and Ear Infirmary have developed latanoprost drug-dispensing hydrogel soft contact lenses that dispense the drug to help facilitate the process. However, some glaucoma patients do not respond to latanoprost because they have uveitic glaucoma or do not want to experience latanoprost’s ocular side effects. Patients need an alternative which can be inserted into these contact lenses. Another commonly used glaucoma drug is ...


Digital Commons powered by bepress