keyword
https://read.qxmd.com/read/38528633/criteria-for-patient-selection-and-indication-for-intracorneal-ring-segments-in-keratoconus
#1
REVIEW
Alfredo Vega, Jorge L Alió
BACKGROUND: Keratoconus is an ectatic, progressive corneal disorder characterized by alterations in the morphology of the corneal tissue that leads to limitation of visual function of the patient. Intracorneal ring segments (ICRS) are small synthetic devices that are implanted in the corneal stromal in order to regularize the morphology of the tissue therefore improving the visual function and the quality of life of the patients. MAIN TEXT: The present narrative review summarizes the main scientific articles developed by the authors in relation to the clinical outcomes and long-term results of ICRS in the treatment of keratoconus...
March 26, 2024: Eye and Vision (London, England)
https://read.qxmd.com/read/38528626/potential-ocular-indicators-to-distinguish-posterior-cortical-atrophy-and-typical-alzheimer-s-disease-a-cross-section-study-using-optical-coherence-tomography-angiography
#2
JOURNAL ARTICLE
Yan Sun, Lumi Zhang, Hui Ye, Lumin Leng, Yi Chen, Yujie Su, Peifang Ren, Hong Lu, Guoping Peng
BACKGROUND: Posterior cortical atrophy (PCA) is a form of dementia that frequently displays significant visual dysfunction and relatively preserved cognitive and executive functions, thus hindering early diagnosis and treatment. This study aimed to investigate possible fundus markers in PCA patients and compare them with those of typical Alzheimer's disease (AD) patients to seek potential diagnostic patterns. METHODS: Age-matched PCA and AD patients and healthy controls (HC) completed optometry, intraocular pressure measurement, neuropsychologic assessments, optical coherence tomography (OCT), and optical coherence tomography angiography (OCTA) examination in one visit...
March 25, 2024: Alzheimer's Research & Therapy
https://read.qxmd.com/read/38525850/machine-learning-based-prediction-of-tear-osmolarity-for-contact-lens-practice
#3
JOURNAL ARTICLE
Izabela K Garaszczuk, Maria Romanos-Ibanez, Alejandra Consejo
PURPOSE: This study addressed the utilisation of machine learning techniques to estimate tear osmolarity, a clinically significant yet challenging parameter to measure accurately. Elevated tear osmolarity has been observed in contact lens wearers and is associated with contact lens-induced dry eye, a common cause of discomfort leading to discontinuation of lens wear. METHODS: The study explored machine learning, regression and classification techniques to predict tear osmolarity using routine clinical parameters...
March 25, 2024: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/38515331/neural-consequences-of-symptomatic-convergence-insufficiency-a-small-sample-study
#4
JOURNAL ARTICLE
Yuxuan Zeng, Tamara S Oechslin, Douglas E Widmer, Marjean T Kulp, Nicklaus Fogt, Andrew Toole, Steven Manning, David E Osher
INTRODUCTION: Convergence insufficiency (CI) is an oculomotor abnormality characterised by exophoria and inadequate convergence when focusing on nearby objects. CI has been shown to cause symptoms when reading. However, the downstream consequences on brain structure have yet to be investigated. Here, we investigated the neural consequences of symptomatic CI, focusing on the left arcuate fasciculus, a bundle of white matter fibres which supports reading ability and has been associated with reading deficits...
March 21, 2024: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/38507595/quality-of-refractive-error-care-in-cambodia-an-unannounced-standardized-patient-study
#5
JOURNAL ARTICLE
Anthea Burnett, Ngy Meng, Do Seiha, Neath Kong, Seila Chea, Malis Dean, Piseth Horm, Kim San Meas, Beatrice Varga, Suit May Ho, Myra McGuinness, Ling Lee
PURPOSE: Quality-of-care in refractive error services is essential, as it directly affects vision outcomes, wellbeing, educational attainment, and workforce participation. In Cambodia, uncorrected refractive error is a leading cause of mild and moderate vision impairment in adults. We evaluated the quality of refractive error care in Cambodia by estimating the proportion of prescribed and dispensed spectacles appropriate for people's refractive error needs and factors associated with spectacle quality...
March 20, 2024: Ophthalmic Epidemiology
https://read.qxmd.com/read/38504505/detection-of-significant-vision-conditions-in-children-using-quicksee-wavefront-autorefractor
#6
JOURNAL ARTICLE
Anh Bui, G Lynn Mitchell, Catherine McDaniel, Ann Morrison, Andrew Toole, Michelle Buckland, Marjean T Kulp
PURPOSE: This study evaluated the ability of QuickSee to detect children at risk for significant vision conditions (significant refractive error [RE], amblyopia and strabismus). METHODS: Non-cycloplegic refraction (using QuickSee without and with +2 dioptre (D) fogging lenses) and unaided binocular near visual acuity (VA) were measured in 4- to 12-year-old children. Eye examination findings (VA, cover testing and cycloplegic retinoscopy) were used to determine the presence of vision conditions...
March 19, 2024: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/38494521/deep-learning-for-detection-of-fuchs-endothelial-dystrophy-from-widefield-specular-microscopy-imaging-a-pilot-study
#7
JOURNAL ARTICLE
Valencia Hui Xian Foo, Gilbert Y S Lim, Yu-Chi Liu, Hon Shing Ong, Evan Wong, Stacy Chan, Jipson Wong, Jodhbir S Mehta, Daniel S W Ting, Marcus Ang
BACKGROUND: To describe the diagnostic performance of a deep learning (DL) algorithm in detecting Fuchs endothelial corneal dystrophy (FECD) based on specular microscopy (SM) and to reliably detect widefield peripheral SM images with an endothelial cell density (ECD) > 1000 cells/mm2 . METHODS: Five hundred and forty-seven subjects had SM imaging performed for the central cornea endothelium. One hundred and seventy-three images had FECD, while 602 images had other diagnoses...
March 18, 2024: Eye and Vision (London, England)
https://read.qxmd.com/read/38494447/intrasession-repeatability-and-agreement-of-the-anterior-corneal-assessment-provided-by-a-multidiagnostic-device
#8
JOURNAL ARTICLE
Ana Rosa Barrio, Beatriz Antona, Sofía Morago-Villanueva, Víctor Martínez-Arribas, Mariano González-Pérez
CLINICAL RELEVANCE: Multidiagnostic systems have recently appeared on the market. Knowledge of the repeatability and validity of any instrument is mandatory before its introduction in clinical practice. BACKGROUND: The aim of this work is to examine the intrasession repeatability of anterior pole measurements provided by the multidiagnostic device Wave Analyzer Medica 700 (WAM700) and agreement with Pentacam measurements in normal eyes. METHODS: In the right eyes of 113 participants, three repeat measurements of central keratometry, central corneal thickness, anterior chamber depth and corneal eccentricity were made with the WAM700 and Pentacam in random order...
March 17, 2024: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://read.qxmd.com/read/38489231/social-media-use-and-vision-impairment-in-adults-between-the-ages-of-18-and-35-years-in-india
#9
JOURNAL ARTICLE
Ahalya Subramanian, Krishna Priya Kodavati, Jahnavi Kanchustambam, Vijaya K Gothwal
SIGNIFICANCE: Social media is used by >4.48 billion people worldwide. Despite its popularity, vision-impaired individuals struggle to use social media given visual inaccessibility of content and lack of access to Internet/Wireless-Fidelity-enabled devices. Our study explores visually impaired adult's use of social media in comparison to a control group. PURPOSE: This study aimed to report the demographic profile and patterns of social media use among adults with vision impairment (VI) aged 18 to 35 years and compare it with an age-matched normally sighted group in India...
March 13, 2024: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://read.qxmd.com/read/38484727/the-effect-of-macular-visual-field-test-density-on-central-structure-function-concordance-in-glaucoma
#10
JOURNAL ARTICLE
Daniel Rafla, Michael Kalloniatis, Jack Phu
CLINICAL RELEVANCE: Central visual field (VF) testing often requires focussed high-density test grids. The critical number of test locations for maximising structure-function concordance in the macula is not known. PURPOSE: The aim of this work is to determine the impact of the number of test locations in the central VF on binarized structure-function concordance in glaucoma. METHODS: Humphrey Field Analyser (HFA) 10-2 test grid and Cirrus optical coherence tomography Ganglion Cell Analysis (GCA) results from one eye of 155 glaucoma patients were extracted...
March 14, 2024: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://read.qxmd.com/read/38484726/appropriate-addition-power-for-aphakic-infants-determined-by-a-smart-wearable-device-clouclip
#11
JOURNAL ARTICLE
Xinting Liu, Shuyun Wen, Muhan Sun, Yu Rong, Sijun Zhao, Tianhao Huang, Weizhong Lan, Chong Chen, Fan Lu, Xinjie Mao
CLINICAL RELEVANCE: It is particularly important to perform reasonable and effective optical correction to enable visual development after primary lens removal surgery for congenital cataracts. Aphakic infants need a suitable addition power of prescription (ADD) to help them focus on close visual objects. BACKGROUND: It is challenging to obtain appropriate ADD power for infants due to poor cooperation and lack of subjective feedback. We aimed to determine the appropriate ADD for aphakic infants using a recently developed smart wearable device called Clouclip...
March 14, 2024: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://read.qxmd.com/read/38479117/maximal-aerobic-exercise-and-acute-visual-performance-in-females-implications-for-concussion-side-line-testing
#12
JOURNAL ARTICLE
Brandon S Shaw, Gerrit Breukelman, Lourens Millard, Jason Moran, Gavin Sandercock, Ina Shaw
PURPOSE: Many sports-related concussion (SRC) outcomes can be prevented by removing affected athletes and allowing return after full recovery. Diagnosing concussions on the side-line is challenging, as tools often rely on visual performance assessment. Since acute exercise can affect vision, it is vital to determine if exercise can mask potential brain injury if visual performance assessments are used. The aim of this study was to determine the effect of a single bout of maximal aerobic exercise on acute visual performance...
March 12, 2024: Journal of Optometry
https://read.qxmd.com/read/38476961/dichoptic-rescue-for-spectacle-flip-sabotage-of-anisometropic-amblyopia-therapy
#13
Robert W Arnold
BACKGROUND: To be successful, amblyopia therapeutic techniques must respond when ingenious (shrewd) amblyopic children sabotage treatment effect by discovering ways(1) to alter those therapy aspects they find frustrating. METHODS: Her guardian consented to IRB-approved study outside typical FDA enrollment guidelines for CureSight dichoptic therapy. Acuity (EVA) and stereopsis was by PEDIG protocols. RESULTS: A 6-year-old rural Alaska native girl in foster care had previously been diagnosed with anisometropic amblyopia and treated with spectacles and patching but had poor compliance with BCVA 0...
2024: Clinical Optometry
https://read.qxmd.com/read/38467534/accommodation-response-and-spherical-aberration-during-1-year-of-orthokeratology-lens-wear-and-after-discontinuation
#14
JOURNAL ARTICLE
Laura Batres, Gonzalo Valdes-Soria, María Romaguera, Gonzalo Carracedo
BACKGROUND: To assess accommodation and spherical aberration changes during one year of orthokeratology lens wear and one month after lens cessation. METHODS: A prospective, randomized, longitudinal study was conducted on forty-seven young healthy subjects at the Optometry Clinic of the Complutense University of Madrid (Spain). Non-cycloplegic refraction, high and low uncorrected visual acuity, high and low best corrected visual acuity, accommodative lag, horizontal near phoria, corneal topography, and high-order aberrations were performed at baseline, 1-day, 1-week, 1-, 6- and 12-months of lens wear and after one month of wash out period...
March 10, 2024: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://read.qxmd.com/read/38464013/optometry-students-experiences-of-their-clinical-training-a-qualitative-study-in-a-low-resource-setting
#15
Boaz Mucunguzi, Walker Guti, Moreen Tumwine, Aloysius G Mubuuke, Ian Munabi, Arild Raaheim, Sarah Kiguli
Background: There is a gradual increase in the number of optometry education programs in low resource settings yet there is limited knowledge on optometry students' experiences of their clinical training. Therefore, the purpose of this study was to explore the optometry students' experiences of their clinical learning environment at a national referral and teaching hospital within a low resource setting. Methods: The study adopted a qualitative design using face to face in-depth interviews to explore experiences of the participants...
March 1, 2024: Research Square
https://read.qxmd.com/read/38456753/assessment-of-the-effects-of-myopic-and-hyperopic-anisometropia-on-choroidal-vascular-structure-in-children-using-ss-octa
#16
JOURNAL ARTICLE
Yiwen Cao, Xiaopeng Gu, Yadi Zhang, Jingjing Zhao, Dehai Zhu
OBJECTIVE: To compare large- and medium-sized choroidal vascularity and the choriocapillaris (CC) flow area in children with different refractive errors using swept-source optical coherence tomography angiography (SS-OCTA). METHODS: Forty-two anisometropic children were enrolled and divided into hyperopic anisometropia (HA) and myopic anisometropia (MA) groups. SS-OCTA was performed to analyse choroidal vascularity. Mean choroidal thickness (CT), choroidal vascularity volume (CVV), choroidal vascularity index (CVI) and CC flow area were compared between the two eyes...
March 8, 2024: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://read.qxmd.com/read/38452798/manhattan-vision-screening-and-follow-up-study-nyc-sight-vision-and-refractive-error-results
#17
JOURNAL ARTICLE
Daniel F Diamond, Yocheved S Kresch, Prakash Gorroochurn, Lisa Park, Jason D Horowitz, Qing Wang, Stefania C Maruri, Desiree R Henriquez, Noga Harizman, Jailine Carrion, Jeffrey M Liebmann, George A Cioffi, Lisa A Hark
CLINICAL RELEVANCE: Optometrists can play a key role in providing access to eye care in underserved populations by organising community-based eye health screenings that include optometric exams to detect vision impairment and uncorrected refractive error. BACKGROUND: Community-based eye health screenings and optometric exams were conducted in the NYC-SIGHT Study. METHODS: A sub-analysis of vision impairment and refractive error results within a 5-year prospective, cluster-randomised clinical trial...
March 7, 2024: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://read.qxmd.com/read/38452795/optical-coherence-tomography-angiography-in-the-diagnosis-of-ocular-disease
#18
REVIEW
Michael Kalloniatis, Henrietta Wang, Jack Phu, Janelle Tong, James Armitage
Clinical imaging provided by optical coherence tomography (OCT) and its variant, OCT-angiography (OCT-A), has revolutionised eyecare practice. The imaging techniques allow for the identification and quantification of ocular structures, supporting the diagnosis and prognosis of eye disease. In this review, an overview of the usefulness of OCT-A imaging in the diagnosis and management of a range of ocular conditions is provided when used in isolation or in combination with other imaging modalities and measures of visual function (visual field results)...
March 7, 2024: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://read.qxmd.com/read/38449717/association-between-axial-length-to-corneal-curvature-radius-ratio-and-myopia-in-adult-patients
#19
JOURNAL ARTICLE
Yanyun Fan, Yikeng Huang, Xionggao Huang
PURPOSE: To analyze the distribution characteristics of axial length to corneal curvature radius ratio (AL/CR) and other ocular biometric parameters in adult myopia patients and their association with myopia. METHODS: A cross-sectional study was conducted among patients with no eye diseases except ametropia who attended the optometry clinic of the First Affiliated Hospital of Hainan Medical College from January 2022 to June 2022. In total, 187 eyes (right eye) of 187 myopic patients aged 18-35 years were selected by random sampling...
2024: Journal of Ophthalmology
https://read.qxmd.com/read/38448961/potential-applications-of-artificial-intelligence-in-image-analysis-in-cornea-diseases-a-review
#20
REVIEW
Kai Yuan Tey, Ezekiel Ze Ken Cheong, Marcus Ang
Artificial intelligence (AI) is an emerging field which could make an intelligent healthcare model a reality and has been garnering traction in the field of medicine, with promising results. There have been recent developments in machine learning and/or deep learning algorithms for applications in ophthalmology-primarily for diabetic retinopathy, and age-related macular degeneration. However, AI research in the field of cornea diseases is relatively new. Algorithms have been described to assist clinicians in diagnosis or detection of cornea conditions such as keratoconus, infectious keratitis and dry eye disease...
March 7, 2024: Eye and Vision (London, England)
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