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Scooped by
AEOPTOMETRISTAS
September 18, 2014 12:16 AM
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Drexler, W., Liu, M., Kumar, A., Kamali, T., Unterhuber, A., & Leitgeb, R. A. (2014). Optical coherence tomography today: speed, contrast, and multimodality. Journal of biomedical optics, 19(7), 071412-071412.
In the last 25 years, optical coherence tomography (OCT) has advanced to be one of the most innovative and most successful translational optical imaging techniques, achieving substantial economic impact as well as clinical acceptance. This is largely owing to the resolution improvements by a factor of 10 to the submicron regime and to the imaging speed increase by more than half a million times to more than 5 million A-scans per second, with the latter one accomplished by the state-of-the-art swept source laser technologies that are reviewed in this article. In addition, parallelization of OCT detection, such as line-field and full-field OCT, has shortened the acquisition time even further by establishing quasi-akinetic scanning. Besides the technical improvements, several functional and contrast-enhancing OCT applications have been investigated, among which the label-free angiography shows great potential for future studies.
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AEOPTOMETRISTAS
September 9, 2014 6:44 AM
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Kim, D., Nam, W. H., Kim, H. K., & Yi, K. (2014). Does Intravitreal Injections of Bevacizumab for Age-related Macular Degeneration Affect Long-term Intraocular Pressure?. Journal of Glaucoma.
Purpose:To evaluate the long-term intraocular pressure (IOP) changes after intravitreal injection of bevacizumab for age-related macular degeneration.
Patients and Methods:A total of 83 eyes that received intravitreal injections of bevacizumab for age-related macular degeneration were enrolled. ...
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AEOPTOMETRISTAS
September 9, 2014 6:16 AM
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Lee, H. S., Ji, Y. S., & Yoon, K. C. (2014). Efficacy of Hypotonic 0.18% Sodium Hyaluronate Eye Drops in Patients With Dry Eye Disease. Cornea, 33(9), 946-951. Purpose:The aim of this study was to evaluate the efficacy of hypotonic 0.18% sodium hyaluronate (SH) eye drops under the clinical settings of the dry eye workshop treatment guideline for mild dry eye disease (DED).
Methods:This analysis included 60 patients with DED. Patients with level 1 DED w...
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AEOPTOMETRISTAS
September 2, 2014 12:41 AM
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Espandar, L., Caldwell, D., Watson, R., Blanco-Mezquita, T., Zhang, S., & Bunnell, B. (2014). Application of Adipose-Derived Stem Cells on Scleral Contact Lens Carrier in an Animal Model of Severe Acute Alkaline Burn. Eye & Contact Lens.
Purpose: To evaluate the therapeutic effect of human adipose-derived stem cells (hASCs) overlaid on a scleral contact lens (SCL) carrier in a rabbit model of ocular alkaline burn. Materials and Methods: After inducing alkaline burn in 11 New Zealand white rabbits, hASCs cultured on SCLs were placed on the right eye of 5 rabbits, SCLs without cells were used in 5, and no treatment was applied in 1 eye. Each eye was examined and photographed for corneal vascularization, opacities, and epithelial defect in week 1, 2, and 4 after surgery. After 1 month, rabbits were killed and the corneas were removed and cut in half for electron and light microscopy examination.
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AEOPTOMETRISTAS
July 24, 2014 11:44 AM
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Luger, M. H., Ewering, T., & Arba-Mosquera, S. (2014). Analysis of seasonal changes in residual refraction 1-year after corneal laser refractive surgery: a retrospective study. Journal of Optometry.
Purpose To analyze the effect of seasonal changes in residual refraction 1-year after corneal refractive surgery using the SCHWIND AMARIS laser system. Methods 5740 consecutive treatments have been retrospectively reviewed. For all eyes, aspheric treatments were planned with the Custom Ablation Manager software and the ablations were performed with the SCHWIND AMARIS system (SCHWIND eye-tech-solutions). Seasonal outcomes were evaluated in terms of residual refraction stratified per treatment month, as well as stratified per year season. Student's T test comparing stratified values with global ones was used for the statistical analysis.
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AEOPTOMETRISTAS
July 24, 2014 11:20 AM
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WASHINGTON, July 22, 2014—Scientists may have overcome one of the major hurdles in developing high-efficiency, long-lasting solar cells—keeping them cool, even in the blistering heat of the noonday Sun.
By adding a specially patterned layer of silica glass to the surface of ordinary solar cells, a team of researchers led by Shanhui Fan, an electrical engineering professor at Stanford University in California has found a way to let solar cells cool themselves by shepherding away unwanted thermal radiation. The researchers describe their innovative design in the premiere issue of The Optical Society’s (OSA) new open-access journal Optica.
Solar cells are among the most promising and widely used renewable energy technologies on the market today. Though readily available and easily manufactured, even the best designs convert only a fraction of the energy they receive from the Sun into usable electricity.
Part of this loss is the unavoidable consequence of converting sunlight into electricity. A surprisingly vexing amount, however, is due to solar cells overheating.
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Scooped by
AEOPTOMETRISTAS
July 22, 2014 5:03 AM
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Roulez, F. M., Faes, F., Delbeke, P., Van Bogaert, P., Rodesch, G., De Zaeytijd, J., ... & Meire, F. M. (2014). Congenital Fixed Dilated Pupils Due to ACTA2–Multisystemic Smooth Muscle Dysfunction Syndrome. Journal of Neuro-Ophthalmology, 34(2), 137-143.
Abstract:Congenital fixed dilated pupils (congenital mydriasis) is characterized by hypoplasia or aplasia of the iris muscles, with absence of iris between the collarette and pupillary border, creating a scalloped pupillary margin. This condition has been reported in a multisystemic smooth muscle...
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AEOPTOMETRISTAS
July 17, 2014 1:04 AM
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Cai, J. R., Shan, X. F., Cai, Z. G., Zhang, X., & Yu, G. Y. (2014). A New Treatment for Epiphora Secondary to Submandibular Gland Transplantation: Transcutaneous Atropine Gel. The Ocular Surface.
Purpose To explore whether topical application of atropine gel controls epiphora secondary to submandibular gland (SMG) transplantion for severe keratoconjunctivitis sicca.
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Scooped by
AEOPTOMETRISTAS
July 17, 2014 12:49 AM
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Omodaka, K., Murata, T., Sato, S., Takahashi, M., Tatewaki, Y., Nagasaka, T., ... & Nakazawa, T. (2014). Correlation of magnetic resonance imaging optic nerve parameters to optical coherence tomography and the visual field in glaucoma. Clinical & experimental ophthalmology, 42(4), 360-368.
Background: To determine the viability of using magnetic resonance imaging measurement of optic nerve morphology as an objective analysis of glaucomatous damage.
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Scooped by
AEOPTOMETRISTAS
July 15, 2014 4:31 AM
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Journal of Glaucoma:
Kim, Tae-Woo MD*,†; Kim, Martha MD*,†; Lee, Eun Ji MD*,†; Jeoung, Jin Wook MD*; Park, Ki Ho MD
Purpose:To investigate the intraocular pressure (IOP)-lowering efficacy and safety of dorzolamide/timolol fixed combination (DTFC) in patients with normal-tension glaucoma (NTG).
Methods:An open-label, 12-week, 2-center study was conducted. Thirty-seven patients with treatment-naïve NTG received...
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AEOPTOMETRISTAS
July 10, 2014 1:18 AM
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Congdon, N., & Thomas, R. (2014). How can we solve the problem of low uptake of cataract surgery?. Ophthalmic epidemiology, 21(3), 135-137.
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Scooped by
AEOPTOMETRISTAS
July 10, 2014 1:01 AM
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Moshirfar, M., Edmonds, J. N., Behunin, N. L., & Christiansen, S. M. (2014). Current Options in the Management of Pellucid Marginal Degeneration. Journal of refractive surgery (Thorofare, NJ: 1995), 1-12.
PURPOSE:To review and evaluate current and future directions in the diagnosis and surgical management of pellucid marginal degeneration (PMD), including penetrating keratoplasty, full-thickness crescentic wedge resection (FTCWR), deep anterior lamellar keratoplasty (DALK), crescentic lamellar wedge resection (CLWR), crescentic lamellar keratoplasty, tuck-in lamellar keratoplasty (TILK), toric
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AEOPTOMETRISTAS
July 8, 2014 5:22 AM
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Eye (2014) 28, 646–653 J Hanhart1,2, L Tiosano1,2, E Averbukh1, E Banin1, I Hemo1 and I Chowers1 Abstract Aims Anti-vascular endothelial growth factor compounds are routinely used for the treatment of diabetic macular edema (DME). We aim to evaluate for the existence and magnitude of treatment effect on fellow un-injected eyes.
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Scooped by
AEOPTOMETRISTAS
September 18, 2014 12:11 AM
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Zhou, X., Bedggood, P., & Metha, A. (2014). Improving high resolution retinal image quality using speckle illumination HiLo imaging. Biomedical optics express, 5(8), 2563-2579.
Retinal image quality from flood illumination adaptive optics (AO) ophthalmoscopes is adversely affected by out-of-focus light scatter due to the lack of confocality. This effect is more pronounced in small eyes, such as that of rodents, because the requisite high optical power confers a large dioptric thickness to the retina. A recently-developed structured illumination microscopy (SIM) technique called HiLo imaging has been shown to reduce the effect of out-of-focus light scatter in flood illumination microscopes and produce pseudo-confocal images with significantly improved image quality. In this work, we adopted the HiLo technique to a flood AO ophthalmoscope and performed AO imaging in both (physical) model and live rat eyes.
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AEOPTOMETRISTAS
September 9, 2014 6:23 AM
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Teus, M. A., Arruabarrena, C., Hernández-Verdejo, J. L., Cañones, R., & Mikropoulos, D. G. (2014). Ocular residual astigmatism’s effect on high myopic astigmatism LASIK surgery. Eye. Purpose To analyze the effect of ocular residual astigmatism (ORA) on the effectiveness of LASIK for treating high myopic astigmatism.
Methods This is an observational, cross-sectional study. We studied 116 consecutive myopic eyes with −3 diopters (D) or more of astigmatism that underwent LASIK surgery. The magnitude of uncorrected residual refractive astigmatism 3 months postoperatively was measured.
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AEOPTOMETRISTAS
September 2, 2014 12:48 AM
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Lin, H. J., Wan, L., Tsai, F. J., Tsai, Y. Y., Chen, L. A., Tsai, A. L., & Huang, Y. C. (2014). Overnight orthokeratology is comparable with atropine in controlling myopia. BMC ophthalmology, 14(1), 40.
Background Many efforts have been invested in slowing progression of myopia. Among the methods, atropine administration and orthokeratology (OK) are most widely used. This study analyzed the efficacy of atropine and OK lens in controlling myopia progression and elongation of axial length. Methods This retrospective study included 105 patients (210 eyes) who wore OK lenses and 105 patients (210 eyes) who applied 0.125% atropine every night during the 3 following period. Student t-test, linear regression analysis, repeated measure ANOVA, and Pearson’s correlation coefficient were used for statistical analysis.
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AEOPTOMETRISTAS
September 2, 2014 12:37 AM
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Jonuscheit, S. (2014)Purpose: To review data extraction strategies for the reporting of non-central corneal thickness with the Pentacam system.Methods: Using predefined search terms, the electronic National Institutes of Health database (PubMed) was searched for studies assessing non-central corneal thickness using the Pentacam instrument. The article titles of the search results were screened for relevance. The abstracts of papers with appropriate titles were retrieved and read. Articles with relevant abstracts were obtained and read in full. The reference list of each article was hand searched to identify further studies. Articles reporting central corneal thickness only were excluded.
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Scooped by
AEOPTOMETRISTAS
July 24, 2014 11:27 AM
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Bahrami, M., Hoshino, M., Pierscionek, B., Yagi, N., Regini, J., & Uesugi, K. (2014). Optical properties of the lens: An explanation for the zones of discontinuity. Experimental Eye Research.
The structural basis of zones of discontinuity in the living human eye lens has not been elucidated, and there is no conclusive explanation for what relevance they may have to the structure and function of the lens. Newly developed synchrotron radiation based X-ray Talbot interferometry has enabled the detection of subtle fluctuations in the human eye lens which, when used in mathematical modelling to simulate reflected and scattered light, can recreate the image of the lens seen in the living human eye.
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AEOPTOMETRISTAS
July 22, 2014 5:29 AM
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Ngo, C. S., Pan, C. W., Finkelstein, E. A., Lee, C. F., Wong, I. B., Ong, J., ... & Saw, S. M. (2014). A cluster randomised controlled trial evaluating an incentive‐based outdoor physical activity programme to increase outdoor time and prevent myopia in children. Ophthalmic and Physiological Optics, 34(3), 362-368.Abstract Purpose To evaluate an incentive-based intervention to increase time spent outdoors among children in a 9-month cluster randomised controlled trial. Methods Two hundred and eighty-five children aged 6–12 years of age were randomised to the intervention (n = 147) or control arm (n = 138) in the Family incentive trial (FIT). The FIT intervention comprised of targeted education on myopia and good eye care habits, structured weekend outdoor activities and incentives for children to increase
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AEOPTOMETRISTAS
July 22, 2014 4:57 AM
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Kosker, M., Suri, K., Hammersmith, K. M., Nassef, A. H., Nagra, P. K., & Rapuano, C. J. (2014). Another Look at the Association Between Diabetes and Keratoconus. Cornea, 33(8), 774-779.
Purpose:The aim of this study was to evaluate the association between diabetes mellitus (DM) and keratoconus.
Methods:We conducted 2 substudies: (1) Retrospective comparison of the prevalence of DM in patients with keratoconus with that of control patients without keratoconus and (2) Cross-secti...
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AEOPTOMETRISTAS
July 17, 2014 12:53 AM
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Legge, G. E. (2014). Prentice Medal Lecture 2013: Visual Accessibility: A Challenge for Low-Vision Research. Optometry & Vision Science, 91(7), 696-706.
Abstract: Low vision may be defined as any chronic form of vision impairment, not correctable by glasses or contact lenses, that adversely affects everyday function. Visual accessibility refers to factors that make an environment, device, or display usable by vision. In this article, I discuss the concept of visual accessibility with special reference to low vision. What role can vision science play in enhancing visual accessibility for people with low vision? I propose that greater efforts to embed low-vision research in real-world contexts and collaboration with other disciplines will accelerate progress. I describe examples from my current research projects on architectural accessibility and reading accessibility.
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AEOPTOMETRISTAS
July 15, 2014 4:37 AM
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Dağ, Ersel MD; Örnek, Nurgül MD; Örnek, Kemal MD; Erbahçeci-Timur, Inci Elif MD Background:To investigate the optical coherence tomography (OCT) and visual field findings in Friedreich ataxia (FRDA).
Methods:Ten eyes of 10 patients with genetically confirmed FRDA were included in this study. Twenty-two eyes of 22 age- and sex-matched volunteers served as controls. All eyes ...
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AEOPTOMETRISTAS
July 15, 2014 4:18 AM
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Eye (2014) 28, 819–824; W J Kim1 and M M Kim1 Purpose The aim of this study is to investigate the difference of the clinical course in recurrent intermittent exotropia after second surgery compared with both recurrent intermittent exotropia after its first of two surgeries and intermittent exotropia after only a single surgery. Methods We retrospectively reviewed the medical records of patients diagnosed with intermittent exotropia who underwent lateral rectus recession and medial rectus resection (R&R) between January 1992 and
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AEOPTOMETRISTAS
July 10, 2014 1:13 AM
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Hollingsworth, R., Ludlow, A. K., Wilkins, A., Calver, R., & Allen, P. M. (2014). Visual performance and ocular abnormalities in deaf children and young adults: a literature review. Acta ophthalmologica, 92(4), 305-310.
Abstract Visual defects are common in deaf individuals. Refractive error and ocular motor abnormalities are frequently reported, with hyperopia, myopia, astigmatism and anomalies of binocular vision, all showing a greater prevalence in deaf individuals compared with the general population. Near visual function in deaf individuals has been relatively neglected in the literature to date. Comparisons between studies are problematic due to differences in methodology and population characteristics.
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AEOPTOMETRISTAS
July 8, 2014 5:32 AM
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Journal of Glaucoma:
Fan, Shan MD; Agrawal, Ankit BS; Gulati, Vikas MD; Neely, Donna G. MBA; Toris, Carol B. PhD
Purpose:The effects of brimonidine on daytime and nighttime intraocular pressure (IOP) and aqueous humor dynamics were evaluated in volunteers with ocular hypertension (OHT).
Patients and Methods:Thirty participants with OHT (58.6±1.7 years old, mean±SEM) were enrolled into this randomized, doub...
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...la elección de la longitud de onda central y ancho de banda de la fuente de luz PTU de dentro del intervalo de 500 a 1500 nm, la resolución axial y contraste así como la penetración se puede ajustar para el procedimiento de formación de imágenes y la aplicación médica.