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Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)

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https://read.qxmd.com/read/30697790/distribution-of-mid-peripheral-cones-in-emmetropic-and-myopic-subjects-using-adaptive-optics-flood-illumination-camera
#1
Kelly Woog, Richard Legras
PURPOSE: We measured in vivo cone photoreceptors up to 24° of eccentricity along the horizontal meridian of healthy human retina. We also investigated the impact on cone densities of axial eye length elongation occurring with myopia. METHODS: Using a flood illumination device coupled with an adaptive optics system, rtx1™, ( www.imagine-eyes.com), 55 right healthy retinas were imaged along the horizontal (i.e. nasal and temporal) meridian over a 48° field (i...
January 29, 2019: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30600544/accuracy-of-detection-of-patients-with-narrow-angles-by-community-optometrists-in-scotland
#2
Roxanne Annoh, Cheng Yi Loo, Brian Hogan, Huai Ling Tan, Ling Shan Tang, Andrew J Tatham
AIM: To examine the accuracy of referrals by community optometrists for suspected primary angle closure, including primary angle closure suspects, primary angle closure and primary angle closure glaucoma. METHODS: A retrospective review of 769 consecutive patients referred by community optometrists to the glaucoma clinic at a university hospital in Scotland. Ninety-five of 715 eligible subjects (13%) were referred due to suspected angle closure. All subjects had a comprehensive eye examination in the glaucoma clinic, including gonioscopy, with angle closure defined according to the International Society of Geographical and Epidemiological Ophthalmology classification as iridotrabecular contact over at least 270 degrees...
January 1, 2019: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30776852/the-prevalence-and-diagnosis-of-stereoblindness-in-adults-less-than-60-years-of-age-a-best-evidence-synthesis
#3
REVIEW
Adrien Chopin, Daphne Bavelier, Dennis Michael Levi
PURPOSE: Stereoscopic vision (or stereopsis) is the ability to perceive depth from binocular disparity - the difference of viewpoints between the two eyes. Interestingly, there are large individual differences as to how well one can appreciate depth from such a cue. The total absence of stereoscopic vision, called 'stereoblindness', has been associated with negative behavioural outcomes such as poor distance estimation. Surprisingly, the prevalence of stereoblindness remains unclear, as it appears highly dependent on the way in which stereopsis is measured...
March 2019: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30776851/corrigendum
#4
(no author information available yet)
No abstract text is available yet for this article.
March 2019: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30776850/marketing-and-anecdotal-evidence-should-not-guide-the-delivery-of-optometric-interventions
#5
EDITORIAL
Catherine M Suttle
No abstract text is available yet for this article.
March 2019: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30776849/simulated-image-doubling-and-visual-acuity-effects-of-doubling-magnitude-orientation-and-ghost-image-intensity
#6
Andrew Carkeet, Yu-Chong Anderson Chang, Te-Yuan Chang, Po-Yen Mike Chen, Ming Gu, Vincent Lin, Jia Hao Ng
PURPOSE: The effects of image doubling on logarithmic progression chart visual acuity were investigated by simulating diplopia on a computer monitor. METHODS: Ten participants (6M, 4F) aged 21-28 years (mean 22.4 ± 2.3) were assessed viewing with their left eye while wearing their best correction. Stimuli were eight rows of five Sloan letters, from 0.4 to -0.3 logMAR (6/15 to 6/3) arranged in logarithmic progression format, generated on an HD monitor. Stimuli were generated with different magnitudes of doubling, different directions of doubling, and different intensity ratios between the ghost image and main images...
March 2019: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30776848/rehabilitation-needs-and-activity-limitations-of-adults-with-a-visual-impairment-entering-a-low-vision-rehabilitation-service-in-england
#7
Jane Macnaughton, Keziah Latham, Marta Vianya-Estopa
PURPOSE: To evaluate outcome measures of the Participation and Activity Inventory (PAI) in a sample of adults with acquired visual impairment entering vision rehabilitation. Both Priority Scores, indicating level of rehabilitative need, and Person Measures, indicating goal difficulty, were considered. METHODS: Participants were newly registered adults with visual impairment within Leicestershire, United Kingdom. The importance and difficulty of 48 goals of the PAI were assessed, as were demographic factors, clinical visual function (visual acuity, contrast sensitivity, reading function) and psychosocial function (adjustment to visual loss, depression, anxiety and fear of falling)...
March 2019: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30776847/corrigendum
#8
(no author information available yet)
No abstract text is available yet for this article.
March 2019: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30628744/from-suppression-to-stereoacuity-a-composite-binocular-function-score-for-clinical-research
#9
Ann L Webber, Joanne M Wood, Benjamin Thompson, Eileen E Birch
PURPOSE: This study aimed to validate a binocular function score that is based on common clinical measures of visual function, providing a more complete analysis of binocular outcomes, against laboratory-based dichoptic tests of threshold stereoacuity and depth of suppression. METHODS: Scores on a composite binocular function (BF) score derived from clinical stereoacuity measures (Randot Preschool Stereoacuity Test and Randot Butterfly) and the Worth 4 Dot test were determined in adults (n = 20; age 24...
January 2019: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30628743/mendelian-randomisation-and-the-goal-of-inferring-causation-from-observational-studies-in-the-vision-sciences
#10
REVIEW
Denis Plotnikov, Jeremy A Guggenheim
PURPOSE: Randomised controlled trials (RCTs) allow reliable causal inferences to be drawn regarding the effectiveness of specific interventions. However, they are expensive to carry out, and not all exposure-outcome relationships can be tested in an RCT framework: for example, it would be unethical to deliberately expose participants to a putative risk factor, or the time-scale involved may be prohibitive. Mendelian randomisation (MR) has been proposed as an alternative approach for drawing causal inferences, with the major advantage that the method can often be applied to existing, cross-sectional study datasets...
January 2019: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30628742/corneal-and-conjunctival-injury-seen-in-urgent-care-centres-in-israel
#11
Deena R Zimmerman, Einat Shneor, Michel Millodot, Ariela Gordon-Shaag
PURPOSE: Corneal and conjunctival injuries (CCI) comprise a large portion of the cases presenting to hospital-based emergency departments (ED) with ocular involvement. Urgent Care Centres (UCC) offer community based emergency care at lower cost than hospital-based emergency departments (ED) and with greater temporal convenience than primary care office settings. While CCI prevalence and treatment at hospital-based EDs has been well studied, this is the first report, to our knowledge, on CCI demographics and aetiology presenting to UCCs...
January 2019: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30628741/multifocal-contact-lenses-towards-customisation
#12
Miguel Faria-Ribeiro, José M González-Méijome
PURPOSE: Firstly, to determine if eyes with spherical aberration (SA) that deviates significantly from the average level underperform when fitted with a simultaneous-imaging contact lens (CL) with a power profile calculated for an 'average eye'. Secondly, to determine if CL customisation can improve image quality in these eyes after fitting with a bifocal CL. METHODS: A statistical model of the wavefront aberration function of normal eyes was used to generate a vector of Zernike fourth-order SA coefficients from 100 synthetic eyes...
January 2019: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30628740/comparison-of-defect-depths-for-sinusoidal-and-circular-perimetric-stimuli-in-patients-with-glaucoma
#13
William H Swanson, Brett J King
PURPOSE: Clinical use of perimetric testing in patients with glaucoma typically assumes that perimetric defects will be less deep for larger than smaller stimuli. However, studies have shown that very large sinusoidal stimuli can yield similar defects as small circular stimuli. In order to provide guidelines for new perimetric stimuli, we tested patients with glaucoma using five different stimuli and compared defects to their patterns of retinal nerve fibre layer (RNFL) damage. METHODS: Twenty subjects with glaucoma were imaged with optical coherence tomography (OCT) volume scans to allow for en face RNFL images and were also tested on a custom perimetry station with five stimuli: Goldmann sizes III and V, a two-dimensional Gaussian blob (standard deviation 0...
January 2019: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30628739/pinholes-and-presbyopia-solution-or-sideshow
#14
EDITORIAL
W Neil Charman
No abstract text is available yet for this article.
January 2019: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30450747/scleral-asymmetry-as-a-potential-predictor-for-scleral-lens-compression
#15
Alejandra Consejo, Joséphine Behaegel, Maarten Van Hoey, D Robert Iskander, Jos J Rozema
PURPOSE: To identify the position and magnitude of lens compression due to short-term miniscleral contact lens wear, as well as evaluating the usefulness of scleral asymmetry as a predictor for scleral lens decentered compression. METHODS: Fourteen healthy subjects (mean ± S.D.: 29.2 ± 6.0 years) wore a highly gas-permeable spherical haptic miniscleral contact lens during a 5-h period. Corneo-scleral height Fourier profilometry was captured using an Eye Surface Profiler (www...
November 18, 2018: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30575075/peripheral-retinal-findings-in-populations-with-macular-disease-are-similar-to-healthy-eyes
#16
Lisa Nivison-Smith, Rebecca Milston, Jaclyn Chiang, Angelica Ly, Nagi Assaad, Michael Kalloniatis
PURPOSE: Recent evidence suggests several macular diseases are associated with peripheral retinal changes. This study investigated the number, type and management consequences of peripheral retinal findings detected in patients attending a referral only, eye-care clinic, the Centre for Eye Health(CFEH) with macular disease. METHODS: Records of 537 patients attending CFEH for a macular assessment were included in the study. Subjects were classified as having age-related macular degeneration (AMD), epiretinal membrane (ERM), central serous chorioretinopathy (CSCR), inherited macular dystrophy or no macular disease...
November 2018: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30575074/confocal-infrared-imaging-with-optical-coherence-tomography-provides-superior-detection-of-a-number-of-common-macular-lesions-compared-to-colour-fundus-photography
#17
Nicola B Quinn, Usha Chakravarthy, Katherine Alyson Muldrew, Barbra Hamill, Bernadette McGuinness, Ian S Young, Frank Kee, Ruth E Hogg
PURPOSE: To compare diagnostic accuracy of confocal infrared reflectance (IR), with and without optical coherence tomography (OCT), to colour fundus photography (CFP) in the Northern Ireland Cohort for the Longitudinal Study of Ageing (NICOLA) Study. METHODS: Cross-sectional observational study of participants in NICOLA. CFP, IR and IR/OCT of 640 eyes were graded for hard, soft and reticular pseudodrusen; geographic atrophy; choroidal neovascularisation; naevus; epiretinal membrane; and haemorrhages...
November 2018: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30575073/thank-you-to-opo-s-reviewers-and-editorial-team
#18
EDITORIAL
David B Elliott
No abstract text is available yet for this article.
November 2018: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30575072/recognition-acuity-in-children-measured-using-the-auckland-optotypes
#19
Lisa M Hamm, Nicola S Anstice, Joanna M Black, Steven C Dakin
PURPOSE: Sloan letters displayed by the Electronic Visual Acuity (EVA) system are the gold standard for recognition acuity measurement in research settings. However, letters are not always appropriate for children. The Auckland Optotypes (TAO) are a new, open-access set of 10 pictograms available in regular and vanishing formats. We sought to assess feasibility of using both formats of TAO for measuring visual acuity (VA) in children using a Bayesian adaptive staircase, in a community setting...
November 2018: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/30575071/development-and-validation-of-a-new-glaucoma-screening-test-using-temporally-modulated-flicker
#20
Bruno R Fidalgo, Anish Jindal, Christopher W Tyler, Irene Ctori, John G Lawrenson
PURPOSE: Describing the psychometric characteristics and diagnostic accuracy of the Accelerator 4-Alternative Forced-Choice Flicker Test prototype (A4FTp) for detecting chronic open angle glaucoma (COAG). METHODS: A4FTp measures temporally-modulated flicker thresholds in regions of the visual field with high susceptibility to glaucomatous loss. We initially evaluated its psychometric properties on 20 normals (aged 33.8 ± 8.5 years) who were tested multiple times over a period of 3 months...
November 2018: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
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