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Myopia control

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https://www.readbyqxmd.com/read/28721004/epithelium-on-photorefractive-intrastromal-cross-linking-pixl-for-reduction-of-low-myopia
#1
Wee Kiak Lim, Zhi Da Soh, Harold Kah Yen Choi, Julian Thiam Siew Theng
PURPOSE: To report the 9-12-month outcomes of a novel procedure for reduction of low myopia through epithelium-on photorefractive intrastromal cross-linking (PiXL) with customized control of topographic distribution of ultraviolet (UV)-fluence. METHOD: Myopic patients with normal (non-ectatic) corneas underwent the PiXL procedure for reduction of low myopia. PiXL treatments were delivered through selective application of UVA light based on the refractive error of each patient...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28719538/misight-assessment-study-spain-a-comparison-of-vision-related-quality-of-life-measures-between-misight-contact-lenses-and-single-vision-spectacles
#2
Alicia Ruiz Pomeda, Belén Pérez-Sánchez, Maria Del Pilar Cañadas Suárez, Francisco Luis Prieto Garrido, Ramón Gutiérrez-Ortega, César Villa-Collar
OBJECTIVES: Recent research has shown that concentric contact lenses (CLs) can be a way to control the progression of myopia. The purpose of the current study was to compare vision-related quality-of-life measures in children wearing distance single-vision (SV) spectacles versus MiSight CLs, a specific concentric design for myopia control. METHODS: Subjects aged 8 to 12 with myopia from -0.75 to -4.00 diopters (D) of sphere and astigmatism less than 1.00 D of cylinder were allocated to the lenses study group (MiSight) or control group (SV)...
July 14, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28718904/autologous-serum-eye-drops-and-enhanced-epithelial-healing-time-after-photorefractive-keratectomy
#3
Hanife Tuba Akcam, Metin Unlu, Emine Esra Karaca, Hulya Yazici, Bahri Aydin, Ahmet Murad Hondur
BACKGROUND: The aim of the study is to test whether use of autologous serum eye-drops can provide earlier epithelial healing following the application of photorefractive keratectomy. METHOD: Sixty patients (60 eyes) underwent photorefractive keratectomy for myopia. Thirty eyes received autologous serum drops (Study group) while 30 eyes received conventional artificial tears (Control group) after photorefractive keratectomy. An 8 mm epithelial opening was prepared with the application of 18 per cent alcohol for 20 seconds...
July 18, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/28690485/a-novel-pathogenic-variant-in-the-mitf-gene-segregating-with-a-unique-spectrum-of-ocular-findings-in-an-extended-iranian-waardenburg-syndrome-kindred
#4
Nazanin Jalilian, Mohammad A Tabatabaiefar, Tayyeb Bahrami, Golaleh Karbasi, Mohammad H Bahramian, Abdolrahman Salimpoor, Mohammad R Noori-Daloii
Waardenburg syndrome (WS) is a rare genetic disorder characterized by abnormal pigmentation of the hair, skin, and iris as well as sensorineural hearing loss. WS is subdivided into 4 major types (WS1-4), where WS2 is characterized by the absence of dystopia canthorum. This study was launched to investigate clinical and molecular characteristics of WS in an extended Iranian WS2 family. A comprehensive clinical investigation was performed. Peripheral blood samples were collected and genomic DNA was extracted...
June 2017: Molecular Syndromology
https://www.readbyqxmd.com/read/28689749/iontophoresis-assisted-accelerated-riboflavin-ultraviolet-a-scleral-cross-linking-a-potential-treatment-for-pathologic-myopia
#5
Shuo Rong, Chaoying Wang, Baoyan Han, Pengfei Feng, Weiwei Lan, Zhipeng Gao, Xiaona Li, Weiyi Chen
Scleral collagen cross-linking is one of the most promising treatments to control the pathologic process of myopia. However, the exact procedure and its impact on animal models of myopia are still to be explored. We modified the scleral riboflavin/ultraviolet A (UVA) cross-linking procedure with an iontophoresis-assisted drug delivery system and an accelerated UVA irradiation (10 mW/cm(2), 9 min) and applied this treatment to an animal model of myopia. Ninety-six New Zealand White rabbits developed relatively stable myopia by visual deprivation and then underwent the modified scleral cross-linking surgery...
July 6, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28682887/atropine-0-5-eyedrops-for-the-treatment-of-children-with-low-myopia-a-randomized-controlled-trial
#6
RANDOMIZED CONTROLLED TRIAL
Yan-Rong Wang, Hong-Li Bian, Qi Wang
BACKGROUND: This study aimed to assess the efficacy and safety of atropine 0.5% eyedrops (ATE) for the treatment of children with low myopia (LM). METHODS: In this study, a total of 126 children with LM were randomly divided into an intervention group (administered 0.5% ATE) and a control group (administered a placebo), with 63 children in each group. The outcome measurements were changes in the spherical equivalent (SE), and axial length (AL), as well as adverse events (AEs)...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28675893/using-high-resolution-3d-magnetic-resonance-imaging-to-quantitatively-analyze-the-shape-of-eyeballs-with-high-myopia-and-provide-assistance-for-posterior-scleral-reinforcement
#7
Baohong Wen, Ge Yang, Jingliang Cheng, Xuemin Jin, Huixia Zhang, Feifei Wang, Chenyu Yan, Dandan Zheng, Tianyong Xu
PURPOSE: To quantitatively analyze the shape of eyes with high myopia and provide assistance for posterior scleral reinforcement (PSR) using high-resolution three-dimensional (3D) magnetic resonance imaging (MRI). METHOD: In all, 260 eyes of 134 patients with high myopia were assessed in this study; 120 emmetropic volunteers were enrolled as a control group. The subjects were examined using 3D T2-weighted CUBE sequences. RESULTS: The eyeballs' axial, horizontal, and vertical lengths were longer and their volume was larger in the subjects with high myopia than in those with emmetropia...
July 5, 2017: Ophthalmologica. Journal International D'ophtalmologie
https://www.readbyqxmd.com/read/28672398/peripheral-design-of-progressive-addition-lenses-and-the-lag-of-accommodation-in-myopes
#8
Tim Schilling, Arne Ohlendorf, Saulius R Varnas, Siegfried Wahl
Purpose: Insufficient accommodative response is assumed to result in myopia progression. We have investigated if the accommodative lag in myopes is different between a single vision lens (SVL) and the progressive addition lens PAL 2, clinically trialled for its ability to reduce progression of myopia, and if there exist differences in accommodative lag between PAL 2 and other PALs with the same addition power (+1.50 D). Methods: The influence of spherical SVL and four different designs of PALs that differ in the near zone width (PAL 1) or that have different signs and magnitude of horizontal gradients of mean power adjacent to their near vision zones (PAL 3 and PAL 4) on the accommodative response was investigated for different near viewing distances (40, 33, and 25 cm) in 31 subjects, aged 18 to 25 years...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28669492/atropine-for-the-prevention-of-myopia-progression-in-children-a-report-by-the-american-academy-of-ophthalmology
#9
Stacy L Pineles, Raymond T Kraker, Deborah K VanderVeen, Amy K Hutchinson, Jennifer A Galvin, Lorri B Wilson, Scott R Lambert
PURPOSE: To review the published literature on the efficacy of topical atropine for the prevention of myopic progression in children. METHODS: Literature searches were last conducted in December 2016 in the PubMed database with no date restrictions, but were limited to studies published in English, and in the Cochrane Library database without any restrictions. The combined searches yielded 98 citations, 23 of which were reviewed in full text. Of these, 17 articles were deemed appropriate for inclusion in this assessment and subsequently were assigned a level of evidence rating by the panel methodologist...
June 29, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28666677/microstructural-evaluation-of-the-mucin-balls-and-their-relations-to-the-corneal-surface-insights-by-in-vivo-confocal-microscopy
#10
Christina N Grupcheva, Dimitar I Grupchev, Mladena N Radeva, Desislava I Vankova, Yana M Manolova
PURPOSE: The purpose of the current study was to observe and correlate the characteristics of mucin balls to the ocular surface properties, and furthermore, to report the effect of different mucin balls size and number on structural alteration of the anterior cornea. METHODS: The study included, two groups of patients fitted with one-month continuous, extended wear lenses for therapeutic (group 1) and optical (group 2) purposes; the later serving as a control group...
June 27, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28657533/-the-ametrop%C3%A3-as-updated-review-for-non-ophthalmologists-physicians
#11
REVIEW
Virgilio Galvis, Alejandro Tello, Oscar Blanco, Andrea N Laiton, Marion R Dueñas, Priscila Alejandra Hidalgo
Refractive errors are caused by a decoupling of the power of convergence of the eye lens, the cornea and lens, which make the rays reaching the eye to focus and generate an image, and the retina, which is the biological photosensitive screen where the image will be transformed into a nerve impulse. These defects include myopia, hyperopia and astigmatism. Presbyopia can also be considered a refractive defect, but of special features, since only affects near vision in patients older than 40 years. By altering the quality of the focused image on the most sensitive area of the retina (the macula), they decrease visual acuity...
2017: Revista de la Facultad de Ciencias Médicas
https://www.readbyqxmd.com/read/28653613/myopia-correction-in-children-a-meta-analysis
#12
Yanhui Cui, Li Li, Qian Wu, Junyang Zhao, Huihui Chu, Gang Yu, Wenbin Wei
PURPOSE: The purpose of this study was to conduct a meta-analysis comparing rigid gas permeable lenses (RGP) with soft contact lenses (SCL), spectacles and orthokeratology (OK) lenses for myopia control with respect to axial length elongation, spherical equivalent and measures of corneal curvature. METHODS: Medline, Cochrane, EMBASE, and Google Scholar databases were searched to September 29, 2015 using the following keywords: rigid gas permeable contact lens; refractive error; and refractive abnormalities...
June 26, 2017: Clinical and Investigative Medicine. Médecine Clinique et Experimentale
https://www.readbyqxmd.com/read/28632734/choroidal-thickness-in-patients-with-coronary-artery-disease
#13
Meleha Ahmad, Patrick A Kaszubski, Lucy Cobbs, Harmony Reynolds, Roland Theodore Smith
PURPOSE: To evaluate choroidal thickness (CTh) in patients with coronary artery disease (CAD) compared to healthy controls. DESIGN: Cross-sectional. METHODS: Setting: Ambulatory clinic of a large city hospital. Patient population: Thirty-four patients had documented CAD, defined as history of >50% obstruction in at least one coronary artery on cardiac catheterization, positive stress test, ST elevation myocardial infarction, or revascularization procedure...
2017: PloS One
https://www.readbyqxmd.com/read/28631305/two-years-results-of-small-incision-lenticule-extraction-and-wavefront-guided-laser-in%C3%A2-situ-keratomileusis-for-myopia
#14
Hidenaga Kobashi, Kazutaka Kamiya, Akihito Igarashi, Masahide Takahashi, Kimiya Shimizu
PURPOSE: To compare the 2-years visual and refractive outcomes between small-incision lenticule extraction (SMILE) and wavefront-guided laser in situ keratomileusis (LASIK) in eyes with myopia and myopic astigmatism. METHODS: Our retrospective case-control study examined 30 eyes of 30 patients with the manifest refraction spherical equivalent (MRSE) of -3.71 ± 1.83 dioptres (D) who underwent SMILE and 30 eyes of 30 patients with MRSE of -3.81 ± 1.40 D who underwent wavefront-guided LASIK...
June 20, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28628489/shifting-of-the-line-of-sight-in-tilted-disk-syndrome
#15
Pinar Kosekahya, Ozge Sarac, Mustafa Koc, Mehtap Caglayan, Gozde Hondur, Nurullah Cagil
OBJECTIVES: To investigate the shifting of the line of sight (LoS) and the refractive, topographic, and aberrometric parameters that may be associated with the shifting of the LoS in eyes with tilted disk syndrome (TDS). METHODS: Eighty left eyes of 80 subjects with TDS (Study Group) and 70 left eyes of 70 subjects with myopia and astigmatism (Control Group) were included in this study. Line-of-sight coordinates on the horizontal (x) and vertical (y) axes, refractive, topographic, and aberrometric parameters were evaluated...
June 16, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28628143/-prevalence-of-reduced-visual-acuity-among-chinese-han-students-in-2014
#16
Y Song, P J Hu, Y H Dong, B Zhang, J Ma
OBJECTIVE: To analyze the prevalence of reduced visual acuity (VA) and to examine the association between reduced visual acuity and influencing factors among Chinese Han students, so as to provide bases for the prevention and treatment of reduced visual acuity. METHODS: Subjects were from 2014 Chinese National Surveys on Students' Constitution and Health (CNSSCH). In this survey, 261 832 Han students aged 7-22 years participated. Unaided distance VA was measured using a retro-illuminated lgMAR chart with tumbling-E optotypes...
June 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28622329/plastic-modification-of-the-cornea-by-pneumatic-force-corrects-myopia-pneumatic-keratology
#17
A Medina
PurposeThe eyeball and, in particular, the cornea deform in vitro by the application of a distending force like other visco-elastic tissue. If the force is large enough, the cornea strains beyond the elastic range, and a permanent deformation occurs. Such permanent strain is referred to as 'plastic' strain. The phenomenon, however, has never been observed or produced on living tissue. This report seeks to demonstrate that the central radius of a patient's cornea can be altered in a controlled manner designed to correct refractive errors...
June 16, 2017: Eye
https://www.readbyqxmd.com/read/28621876/social-health-and-ocular-factors-associated-with-primary-open-angle-glaucoma-amongst-chinese-singaporeans
#18
Nathalie Chiam, Mani Baskaran, Zheng Li, Shamira Perera, David Goh, Rahat Husain, Chiea Chuen Khor, Ching-Yu Cheng, Tin Aung FRCOphth, Eranga N Vithana
IMPORTANCE: There is limited literature on the association of lifestyle and health factors related to primary open angle glaucoma amongst Asians. BACKGROUND: This study evaluated the association of primary open angle glaucoma with smoking, health and ocular factors among Chinese Singaporeans. DESIGN: Case-control study PARTICIPANTS: 711 primary open angle glaucoma patients from a Singapore hospital and 2788 population-based controls. METHODS: Subjects underwent clinical examination and completed a questionnaire with details on family history of glaucoma, comorbidities, smoking, alcohol consumption, age at menopause and use of hormone replacement therapy...
June 16, 2017: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/28602573/dopamine-signaling-and-myopia-development-what-are-the-key-challenges
#19
REVIEW
Xiangtian Zhou, Machelle T Pardue, P Michael Iuvone, Jia Qu
In the face of an "epidemic" increase in myopia over the last decades and myopia prevalence predicted to reach 2.5 billion people by the end of this decade, there is an urgent need to develop effective and safe therapeutic interventions to slow down this "myopia booming" and prevent myopia-related complications and vision loss. Dopamine (DA) is an important neurotransmitter in the retina and mediates diverse functions including retina development, visual signaling, and refractive development. Inspired by the convergence of epidemiological and animal studies in support of the inverse relationship between outdoor activity and risk of developing myopia and by the close biological relationship between light exposure and dopamine release/signaling, we felt it is timely and important to critically review the role of DA in myopia development...
June 7, 2017: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/28601401/orbital-magnetic-resonance-imaging-is-useful-in-age-related-distance-esotropia
#20
Pilar Gómez de Liaño Sanchez, Gloria Olavarri González, Pilar Merino Sanz, Jose C Escribano Villafruela
PURPOSE: To describe findings for orbital magnetic resonance imaging (MRI) in patients with age-related distance esotropia (ARDE). METHODS: We compared 31 orbital MRI from patients with ARDE (77±7 SD years) with 2 control groups: 32 orbits from individuals aged 18-50 years (33±8 SD years) and 16 orbits from individuals aged >60 years (77±7 SD years). MRI scans were acquired using 3D fast field echo in T1 sequence without fat saturation. Exclusion criteria for all groups were neurological or thyroid disease and a relevant ophthalmological history (e...
June 7, 2017: Journal of Optometry
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