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Akilesh Gokul, Dipika V Patel, Grant A Watters, Charles N J McGhee
BACKGROUND/AIMS: To determine if significant progression of disease occurs in older, non-contact lens wearing, subjects with keratoconus and to identify potential predictive factors. METHODS: Clinical and computerised corneal topography records of subjects with keratoconus attending a specialist optometry practice were retrospectively analysed to identify those aged ≥30 years, with ≥2 consultations ≥12 months apart, no contact lens wear and no corneal scarring, surgery or corneal hydrops...
October 11, 2016: British Journal of Ophthalmology
Sowmya Ravikumar, Arthur Bradley, Shrikant Bharadwaj, Larry N Thibos
PURPOSE: To test the hypothesis that binocular depth of field can be expanded while retaining high-quality vision at intermediate distances by combining anisometropia (monovision) and simultaneous vision bifocals. SETTING: School of Optometry, Indiana University, Bloomington, Indiana, USA. DESIGN: Prospective research study. METHODS: A computational polychromatic model was used to simulate retinal images as seen through a pseudophakic eye with a diffractive bifocal for a range of target distances...
September 2016: Journal of Cataract and Refractive Surgery
Jyoti Khadka, Eva Fenwick, Ecosse Lamoureux, Konrad Pesudovs
PURPOSE: There is an increasing demand for high-standard, comprehensive, and reliable patient-reported outcome (PRO) instruments in all the disciplines of health care including in ophthalmology and optometry. Over the past two decades, a plethora of PRO instruments have been developed to assess the impact of eye diseases and their treatments. Despite this large number of instruments, significant shortcomings exist for the measurement of ophthalmic quality of life (QoL). Most PRO instruments are short-form instruments designed for clinical use, but this limits their content coverage often poorly targeting any study population other than that which they were developed for...
September 23, 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Sangeetha Srinivasan, Sharan Shetty, Viswanathan Natarajan, Tarun Sharma, Rajiv Raman
PURPOSE: To develop a simplified algorithm to identify and refer diabetic retinopathy (DR) from single-field retinal images specifically for sight-threatening diabetic retinopathy for appropriate care (ii) to determine the agreement and diagnostic accuracy of the algorithm as a pilot study among optometrists versus "gold standard" (retinal specialist grading). METHODS: The severity of DR was scored based on colour photo using a colour coded algorithm, which included the lesions of DR and number of quadrants involved...
2016: PloS One
Miriam L Conway, Bruce J W Evans, Josephine C Evans, Catherine M Suttle
PURPOSE: Visual Stress (VS) is a condition in which words appear blurred, in motion, or otherwise distorted when reading. Some people diagnosed with VS find that viewing black text on white paper through coloured overlays or precision tinted lenses (PTLs) reduces symptoms attributed to VS. The aim of the present study is to determine whether the choice of colour of overlays or PTLs is influenced by a patient's gender. METHODS: Records of all patients attending a VS assessment in two optometry practices between 2009 and 2014 were reviewed retrospectively...
2016: PloS One
Hassan Hashemi, Mehdi Khabazkhoob, Mohammad Hassan Emamian, Mohammad Shariati, Abbasali Yekta, Akbar Fotouhi
AIM: To determine the distribution of intraocular pressure (IOP) and its determinants in an Iranian population. METHODS: In a cross-sectional survey, random cluster sampling was conducted from the 40-64 years old population of Shahroud, in the north of Iran. All participants had optometry and ophthalmic exams. IOP was determined using the Goldmann tonometry method and biometric components were measured. RESULTS: Of the 6311 people selected for the study, 5190 (82...
2016: International Journal of Ophthalmology
Ahmed M Bata, Katarzyna J Witkowska, Piotr A Wozniak, Klemens Fondi, Gerald Schmidinger, Niklas Pircher, Stephan Szegedi, Valentin Aranha Dos Santos, Anca Pantalon, René M Werkmeister, Gerhard Garhofer, Leopold Schmetterer, Doreen Schmidl
Importance: Corneal abrasions are frequent after standard (epithelium-off [epi-off]) corneal collagen cross-linking (CXL) in patients with progressive keratoconus. A new matrix therapy agent (ReGeneraTing Agent [RGTA]) has been developed to promote corneal wound healing. Objective: To assess the effect of the new type of matrix therapy agent on corneal wound healing after epi-off CXL in patients with keratoconus. Design, Setting, and Participants: This double-masked randomized clinical trial enrolled 40 patients with keratoconus undergoing epi-off CXL from July 18, 2014, to October 21, 2015, when the last follow-up was completed...
October 1, 2016: JAMA Ophthalmology
F Leccese, G Salvadori, M Rocca
BACKGROUND: Extensive literature in ergonomics and optometry has indicated that computer use is closely associated with visual problems. Computer-Aided Design (CAD) requires a substantial effort on behalf of the visual system. The manifestations of visual fatigue phenomena may affect the working behavior and the human-system interaction. OBJECTIVE: The aim of this survey is to identify the normal working conditions and how the eventual visual fatigue phenomena are able to influence the working behavior of CAD users...
August 12, 2016: Work: a Journal of Prevention, Assessment, and Rehabilitation
Philip Raey Kidd Turnbull, Oliver James Munro, John Robert Phillips
PURPOSE: A number of optical methods for slowing myopia progression have been tested and are now available. However, data on real-world use in clinical use is scarce. Here, we present a review of the clinical outcomes for patients attending a specialist myopia control clinic at The University of Auckland Optometry School, NZ. CASE SERIES: We report a comparative case series of 110 patients (aged 4-33 years, mean: 12.13 ± 4.58 years, 62% female) who attended the clinic between 2010 and 2014...
September 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Kevin E Houston, Eleftherios I Pachalis, Danielle C Angueira, P Matthew Bronstad, Anna M Barrett, Mary Alexis Iaccarino
Visual impairments are common after traumatic brain injury (TBI) and negatively affect quality of life. We describe a 39-year-old woman with a severe TBI who was evaluated by the inpatient optometry and vision rehabilitation service with findings of complete right homonymous hemianopia and right cranial nerve III palsy with 30-degree right exotropia (eye turn out) and complete right ptosis (eyelid will not open). The 30-degree exotropia advantageously generated 30 degrees of right visual field expansion when the right ptosis was treated with a magnetic levator prosthesis, which restores eyelid opening...
August 22, 2016: American Journal of Physical Medicine & Rehabilitation
Alison J Alderson, Alison Green, David Whitaker, Andrew J Scally, David B Elliott
PURPOSE: To compare spectacles bought online with spectacles from optometry practices. METHODS: Thirty-three participants consisting of single vision spectacle wearers with either a low (N = 12, mean age 34 ± 14 years) or high prescription (N = 11, mean age 28 ± 9 years) and 10 presbyopic participants (mean age 59 ± 4 years) wearing progressive addition lenses (PALs) purchased 154 pairs of spectacles online and 154 from UK optometry practices. The spectacles were compared via participant-reported preference, acceptability, and safety; the assessment of lens, frame, and fit quality; and the accuracy of the lens prescriptions to international standard ISO 21987:2009...
October 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Sara Ortiz-Toquero, Virginia Zuñiga, Guadalupe Rodriguez, Victoria de Juan, Raul Martin
PURPOSE: To compare the anterior corneal measurements between Placido-based topography and dual-Scheimpflug topography in healthy and keratoconus eyes. SETTING: Optometry Research Group, Instituto Universitario de Oftalmobiología Aplicada, University of Valladolid, Valladolid, Spain. DESIGN: Comparative case series. METHODS: The mean simulated keratometry (K), flat K, steep K, astigmatism power, corneal astigmatism axis, J0, J45, maximum corneal power point, and white-to-white (WTW) distance were collected and compared between healthy eyes and keratoconus eyes...
August 2016: Journal of Cataract and Refractive Surgery
Katherine S McGilton, Fiona Höbler, Jennifer Campos, Kate Dupuis, Tammy Labreche, Dawn M Guthrie, Jonathan Jarry, Gurjit Singh, Walter Wittich
INTRODUCTION: Hearing and vision loss among long-term care (LTC) residents with dementia frequently goes unnoticed and untreated. Despite negative consequences for these residents, there is little information available about their sensory abilities and care assessments and practices seldom take these abilities or accessibility needs into account. Without adequate knowledge regarding such sensory loss, it is difficult for LTC staff to determine the level of an individual's residual basic competence for communication and independent functioning...
2016: BMJ Open
R Zhu, K-L Long, X-M Wu, Q-D Li
OBJECTIVE: To compare the refractive errors measured by the VISX WaveScan, OPD-Scan III and the subjective refraction. The optometry accuracy of computer operated aberrometer used before refractive surgery has been debatable. Hence, a clear study on the role of such automated equipment in optometry is the need of the hour as compared to subjective refraction. PATIENTS AND METHODS: Seventy-six patients (152 eyes) were recruited from January 2013 to December 2013...
July 2016: European Review for Medical and Pharmacological Sciences
Gonzalo Carracedo, Alberto Recchioni, Nicolás Alejandre-Alba, Alba Martin-Gil, Laura Batres, Ignacio Jimenez-Alfaro Morote, Jesús Pintor
PURPOSE: Based on the relationship between keratoconus and dry eye, the aim of this study was to evaluate changes in signs and symptoms of dry eye in keratoconus patients before and after intrastromal corneal ring surgery. METHODS: Fifteen keratoconus patients were enrolled in Fundación Jiménez-Díaz of Madrid and University Clinic of Optometry of the Universidad Complutense de Madrid (Madrid, Spain). Tear break up time (TBUT), Schirmer test without anesthesia, corneal staining, diadenosine tetraphosphate (Ap4A) concentration, and ocular surface disease index (OSDI) were evaluated...
July 22, 2016: Current Eye Research
Robert P Finger, Jing Xie, Kathy Fotis, Sumit Parikh, Rob Cummins, Paul Mitchell, Robyn H Guymer
BACKGROUND: Late neovascular age-related macular degeneration (nvAMD) is very common and causes irreversible severe visual loss unless treated swiftly with vascular endothelial growth factor (VEGF) inhibitors. Although publicly subsidized access to treatment may be inequitable, which is why we assessed treatment provision across Australia. DESIGN: Secondary analysis of Australian data PARTICIPANTS: All Pharmaceutical Benefits Scheme (incl. Repatriation PBS) beneficiaries METHODS: Treatment and incidence data were obtained from Medicare Australia, the Royal Australian and New Zealand College of Ophthalmologists, Optometry Australia, the Blue Mountains Eye Study, and the Australian Bureau of Statistics...
July 23, 2016: Clinical & Experimental Ophthalmology
Irene J Tan, Lucy P Dobson, Stephen Bartnik, Josephine Muir, Angus W Turner
INTRODUCTION: Advances in imaging capabilities and the evolution of real-time teleophthalmology have the potential to provide increased coverage to areas with limited ophthalmology services. However, there is limited research assessing the diagnostic accuracy of face-to-face teleophthalmology consultation. This systematic review aims to determine if real-time teleophthalmology provides comparable accuracy to face-to-face consultation for the diagnosis of common eye health conditions. METHODS: A search of PubMed, Embase, Medline and Cochrane databases and manual citation review was conducted on 6 February and 7 April 2016...
July 20, 2016: Journal of Telemedicine and Telecare
Arne Ohlendorf, Alexander Leube, Siegfried Wahl
PURPOSE: To investigate the inter-device agreement and mean differences between a newly developed digital phoropter and the two standard methods (trial frame and manual phoropter). METHODS: Refractive errors of two groups of participants were measured by two examiners (examiner 1 (E1): 36 subjects; examiner 2 (E2): 38 subjects). Refractive errors were assessed using a trial frame, a manual phoropter and a digital phoropter. Inter-device agreement regarding the measurement of refractive errors was analyzed for differences in terms of the power vector components (spherical equivalent (SE) and the cylindrical power vector components J0 and J45) between the used methods...
2016: Healthcare (Basel, Switzerland)
Brian Layland, Charles McMonnies, Stephen Davis
No abstract text is available yet for this article.
July 2016: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
Eileen P Storey, Stephen R Master, Julia E Lockyer, Olivia E Podolak, Matthew F Grady, Christina L Master
PURPOSE: To determine the incidence of abnormal near point of convergence (NPC) after acute concussion in pediatric patients and to describe the clinical course of such patients. METHODS: A retrospective cohort study of 275 pediatric patients 5 to 18 years of age presenting to a tertiary care children's hospital subspecialty concussion program with a new concussion between July 1, 2014 and June 30, 2015 was conducted. RESULTS: Sixty-seven out of 275 pediatric patients presenting to a subspecialty concussion referral program were found to have abnormal NPC on physical examination as measured by an accommodative rule...
July 6, 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
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