GEA-Grupo de Estudios AEOPTOMETRISTAS
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GEA-Grupo de Estudios AEOPTOMETRISTAS
Avances e investigaciones publicadas recientes en Optometría, Oftalmología y Óptica Oftálmica.
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June 18, 2015 12:53 AM
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One-year outcomes of small-incision lenticule extraction (SMILE): mild to moderate myopia vs. high myopia

One-year outcomes of small-incision lenticule extraction (SMILE): mild to moderate myopia vs. high myopia | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Kim, J. R., Kim, B. K., Mun, S. J., Chung, Y. T., & Kim, H. S. (2015). One-year outcomes of small-incision lenticule extraction (SMILE): mild to moderate myopia vs. high myopia. BMC ophthalmology, 15(1), 59.


The purpose of this study was to compare the refractive outcomes of small incision lenticule extraction (SMILE) in high-myopic patients with those of mild- to moderate-myopic patients.

AEOPTOMETRISTAS's insight:

This #study showed that SMILE is effective and safe for correcting high #myopia, as well as mild to moderate myopia.

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June 16, 2015 12:52 AM
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The other CNVM: A review of myopic choroidal neovascularization treatment in the age of anti-vascular endothelial growth factor agents

The other CNVM: A review of myopic choroidal neovascularization treatment in the age of anti-vascular endothelial growth factor agents | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Adatia, F. A., Luong, M., Munro, M., & Tufail, A. (2015). The other CNVM: A review of myopic choroidal neovascularization treatment in the age of anti-vascular endothelial growth factor agents. Survey of ophthalmology, 60(3), 204-215.


Abstract

Choroidal neovascular membranes (CNVM) associated with pathological myopia (PM) can result in significant vision loss and legal blindness. These membranes usually occur subfoveally and are a major complication of PM, developing in approximately 5–10% of such eyes. PM is the second most common cause of choroidal neovascularization after age-related macular degeneration (AMD), and accounts for nearly 60% of CNVM cases in patients younger than age 50. Vascular endothelial growth factor-A has been implicated as the major angiogenic stimulus responsible for choroidal neovascularization secondary to AMD and several major studies have proved the benefits of anti-VEGF treatment for AMD-related CNVM.


AEOPTOMETRISTAS's insight:

The inferior long-term results of alternative therapies, combined with an excellent safety profile from #anti-VEGF treatment, make anti-VEGF the current recommended first-line #therapy.

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June 16, 2015 12:36 AM
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Aspheric lens to increase the depth of focus

Aspheric lens to increase the depth of focus | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Vázquez-Villa A, Delgado-Atencio JA,  Vázquez-Montiel S, Castro-Ramos J,  Cunill-Rodríguez M.  Aspheric lens to increase the depth of focus.  Optics Letters.  2015;  40 (12):2842-2845

 Abstract For high-resolution optical systems, a long depth of focus is desirable. Unfortunately, resolution and depth of focus are inversely related. In this work, a novel lens is presented to produce long depth of focus beams, keeping the same resolution. 


AEOPTOMETRISTAS's insight:

..una lente simple puede producir haces con un tamaño de punto de 2,9 micras con un rango de 1,5 mm y  un doblete acromático con una profundidad de foco de 10 mm.  #LenteAsferica #ProfundidadFoco

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June 9, 2015 12:41 AM
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STABILITY OF THE ACRYSOF TORIC INTRAOCULAR LENS IN COMBINED CATARACT SURGERY AND TRANSCONJUNCTIVAL SUTURELESS VITRECTOMY

STABILITY OF THE ACRYSOF TORIC INTRAOCULAR LENS IN COMBINED CATARACT SURGERY AND TRANSCONJUNCTIVAL SUTURELESS VITRECTOMY | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Toussaint, B. W., Appenzeller, M. F., Miller, D. M., Petersen, M. R., Foster, R. E., Osher, R. H., ... & Riemann, C. D. (2015). Stability of the Acrysof Toric Intraocular Lens in Combined Cataract Surgery and Transconjunctival Sutureless Vitrectomy. Retina (Philadelphia, Pa.).


Purpose: To report the outcomes of combined cataract surgery with toric intraocular lens (IOL) implantation when performed in conjunction with transconjunctival sutureless pars plana vitrectomy.
Design: Retrospective interventional case series.



AEOPTOMETRISTAS's insight:

La posición de la lente intraocular tórica y el eje se mantuvieron estables después de la implantación, durante la #cirugia de #catarata y #vitrectomia transconjuntival sin sutura.  #LIO 

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June 4, 2015 12:10 AM
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Prospective analysis of outcomes and economic factors of same-day bilateral cataract surgery in the United States

Prospective analysis of outcomes and economic factors of same-day bilateral cataract surgery in the United States | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Rush, S. W., Gerald, A. E., Smith, J. C., Rush, J. A., & Rush, R. B. (2015). Prospective analysis of outcomes and economic factors of same-day bilateral cataract surgery in the United States. Journal of Cataract & Refractive Surgery,41(4), 732-739.


Purpose

To evaluate the visual and economic benefits of same-day bilateral cataract surgery versus separate-day bilateral cataract surgery in the United States.


AEOPTOMETRISTAS's insight:

...Visual and economic benefits for the patient can be achieved with same-day bilateral cataract surgery in the U.S. at the present time.  #cirugía #catarata #FactoresEconomicos #EEUU

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June 2, 2015 10:01 AM
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Corneal Endothelial Abnormalities After Selective Laser Trabeculoplasty (SLT)

Corneal Endothelial Abnormalities After Selective Laser Trabeculoplasty (SLT) | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it
Ong K1, Ong L, Ong LB. Corneal endothelial abnormalities after selective laser trabeculoplasty (SLT).  Journal of Glaucoma:  April/May 2015; 24(4): 286–290


Purpose: Whitish spots are sometimes observed in the corneal endothelium after selective laser trabeculoplasty (SLT). To evaluate the corneal endothelium after SLT, corneal specular microscopy was performed.

AEOPTOMETRISTAS's insight:

The corneal endothelial abnormalities after SLT shown in this study may be transient, and long-term effects are probably negligible in normal corneas or single treatments. #laser #trabeculoplastia

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June 2, 2015 9:46 AM
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End-of-day dryness, corneal sensitivity and blink rate in contact lens wearers

End-of-day dryness, corneal sensitivity and blink rate in contact lens wearers | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Martín-Montañez, V., López-de la Rosa, A., López-Miguel, A., Pinto-Fraga, J., González-Méijome, J. M., & González-García, M. J. (2015). End-of-day dryness, corneal sensitivity and blink rate in contact lens wearers. Contact Lens and Anterior Eye, 38(3), 148-151.


Purpose

To study the relationship among the variables intensity of the end-of-day (EOD) dryness, corneal sensitivity and blink rate in soft contact lens (CL) wearers.


AEOPTOMETRISTAS's insight:

CL wearers with higher corneal sensitivity to mechanical stimulation reported more EOD dryness with habitual CL wear. #LC #cornea #parpadeo

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May 28, 2015 11:30 AM
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High-energy, near- and mid-IR picosecond pulses generated by a fiber-MOPA-pumped optical parametric generator and amplifier

High-energy, near- and mid-IR picosecond pulses generated by a fiber-MOPA-pumped optical parametric generator and amplifier | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Xu, L., Chan, H. Y., Alam, S. U., Richardson, D. J., & Shepherd, D. P. (2015). High-energy, near-and mid-IR picosecond pulses generated by a fiber-MOPA-pumped optical parametric generator and amplifier. Optics Express, 23(10), 12613-12618.


Abstract


We report a high-energy picosecond optical parametric generator/amplifier (OPG/A) based on a MgO:PPLN crystal pumped by a fiber master-oscillator-power-amplifier (MOPA) employing direct amplification. An OPG tuning range of 1450-3615 nm is demonstrated with pulse energies as high as 2.6 μJ (signal) and 1.2 μJ (idler). 




AEOPTOMETRISTAS's insight:

con una fuente filtrada de emisión espontánea amplificada 0,3 nm de ancho de banda, se evita el daño de cristal y le obtienen con una eficiencia global de la conversión de 45%. #laser

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May 28, 2015 11:09 AM
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Fisiopatología del glaucoma de pseudoexfoliación

Fisiopatología del glaucoma de pseudoexfoliación | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Glaucoma | 25 MAY 15

Investigación sobre la fisiopatología genómica y proteómica del glaucoma de pseudoexfoliación

El glaucoma es una de las principales causas de ceguera irreversible en el mundo.  Comprende una serie de patologías provenientes de la degeneración del nervio óptico y se diagnostica al observarse cambios estructurales en la cabeza del nervio óptico asociados con déficit del campo visual. El aumento de la PIO es el principal factor de riesgo de glaucoma y puede combatirse, a su vez el aumento de la PIO puede estar asociado con patología del nervio óptico por disminución de la perfusión del tejido o por daño mecánico a los axones en la cabeza del nervio óptico. Por lo tanto, el control y tratamiento de la PIO elevada es fundamental para pacientes con glaucoma. La causa principal de la PIO elevada es la resistencia al flujo saliente.

El síndrome de pseudoexfoliación se caracteriza por la acumulación de material fibrilar en el ojo y otros tejidos del cuerpo. El material se encuentra en el segmento anterior, en forma de depósitos blancos como copos en la cápsula anterior del cristalino, en el margen del iris, la córnea y el ángulo irido-corneal. 


AEOPTOMETRISTAS's insight:

La comprensión del funcionamiento y regulación de LOXL1 y otros #genes involucrados en l síndrome pseudoexfoliativo sirven para comprender las vías moleculares que intervienen en el soporte axonal del la lámina cribrosa, producción de humor acuoso, flujo y control de la #PIO. 

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May 26, 2015 1:05 AM
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Sex, Eyes, and Vision: Male/Female Distinctions in Ophthalmic Disorders, Current Eye Research, Informa Healthcare

Sex, Eyes, and Vision: Male/Female Distinctions in Ophthalmic Disorders, Current Eye Research, Informa Healthcare | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Eisner, A. (2014). Sex, Eyes, and Vision: Male/Female Distinctions in Ophthalmic Disorders. Current eye research, (0), 1-6.


Abstract

There is growing recognition: (1) that sex (male and female) and sex hormones (androgens and estrogens) are important for physiologic functions outside those pertaining expressly to reproduction, and (2) that both classes of sex hormones are active in both sexes, and moreover are produced locally in non-gonadal tissues throughout the body. The visual system, in addition to being of tremendous inherent importance, is unique in a very distinctive way; it possesses an organ – the eye – having a window allowing its interior to be examined with exquisite precision and control in both laboratory and clinical settings. Plus, many diseases manifest in the eye or are exclusive to the eye. This special issue of Current Eye Research contains 12 review articles, each addressing a different topical area important for Sex, Eyes, and Vision: Male/Female Distinctions in Ophthalmic Disorders.


More: http://informahealthcare.com/doi/abs/10.3109/02713683.2014.975368


AEOPTOMETRISTAS's insight:

...plantea puntos adicionales relativas expresamente: (1) la hipótesis de momento la terapia de estrógeno, y (2) el tratamiento del cáncer de mama con inhibidores de la aromatasa. #sexo #vision

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May 22, 2015 12:56 AM
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Identificación de un nuevo gen asociado a retinosis pigmentaria mediante secuenciación de exoma completo en familias españolas

Identificación de un nuevo gen asociado a retinosis pigmentaria mediante secuenciación de exoma completo en familias españolas | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

POR GENÉTICA MÉDICA · 21 DE MAYO DE 2015

Almudena Avila-Fernandez  , Raquel Perez-Carro , Marta Corton ,Carmen Ayuso .


La retinosis pigmentaria (RP, MIM 268000) es la distrofia de retina (DR) más común. Se presenta con una prevalencia de 1 en 4000 individuos, perteneciendo por ello al grupo de las enfermedades raras. La RP se caracteriza por la degeneración primaria de los fotorreceptores produciendo ceguera nocturna, pérdida del campo visual así como una disminución lenta y progresiva de la agudeza visual. La edad de inicio y la progresión de la enfermedad varían mucho de unos individuos a otros, incluso dentro de la misma familia. Además, la RP, al igual que el resto de las DR presenta una elevada heterogeneidad genética. Es una enfermedad monogénica que puede heredarse siguiendo todos los patrones de herencia mendeliana. Hasta la fecha se han descrito mutaciones asociadas a la RP en más de 70 genes. Aún así, éstas sólo explican el 50% de los casos. Esta heterogeneidad dificulta enormemente el manejo de los pacientes, especialmente la confirmación precisa de su diagnóstico y el consejo genético.

AEOPTOMETRISTAS's insight:

Tras este #estudio, parece que ZNF408 tiene un papel importante en el desarrollo del #3ojo, cumpliendo funciones esenciales en el mantenimiento homeostático de la #retina, ...

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May 20, 2015 2:13 AM
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Review of short-wave infrared spectroscopy and imaging methods for biological tissue characterization

Review of short-wave infrared spectroscopy and imaging methods for biological tissue characterization | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Wilson, R. H., Nadeau, K. P., Jaworski, F. B., Tromberg, B. J., & Durkin, A. J. (2015). Review of short-wave infrared spectroscopy and imaging methods for biological tissue characterization. Journal of biomedical optics, 20(3), 030901-030901.


Abstract.  We present a review of short-wave infrared (SWIR, defined here as ∼1000 to 2000 nm) spectroscopy and imaging techniques for biological tissue optical property characterization. Studies indicate notable SWIR absorption features of tissue constituents including water (near 1150, 1450, and 1900 nm), lipids (near 1040, 1200, 1400, and 1700 nm), and collagen (near 1200 and 1500 nm) that are much more prominent than corresponding features observed in the visible and near-infrared (VIS-NIR, defined here as ∼400 to 1000 nm). 


AEOPTOMETRISTAS's insight:

Los estudios sugieren que este rango de longitud de onda tiene potencial para mejorar el estado de la técnica actual en mediciones ópticas de tejidos #electroscopía #LuzDifusa #infrarrojos #investigacion

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May 14, 2015 12:13 AM
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Regional Assessment of Energy-Producing Metabolic Activity in the Endothelium of Donor Corneas

Regional Assessment of Energy-Producing Metabolic Activity in the Endothelium of Donor Corneas | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Greiner, M. A., Burckart, K. A., Wagoner, M. D., Schmidt, G. A., Reed, C. R., Liaboe, C. A., ... & Aldrich, B. T. (2015). Regional Assessment of Energy-Producing Metabolic Activity in the Endothelium of Donor Corneas.


Purpose. We characterized mitochondrial respiration and glycolysis activity of human corneal endothelium, and compared metabolic activity between central and peripheral regions.



AEOPTOMETRISTAS's insight:

Esta técnica demuestra una alta reproducibilidad, permite la cuantificación de los parámetros metabólicos utilizando pequeñas cantidades de células vivas,...

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June 18, 2015 12:50 AM
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Corneal Involvement in Systemic Inflammatory Diseases

Corneal Involvement in Systemic Inflammatory Diseases | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Gomes, B. A., Santhiago, M. R., Jorge, P. A., Kara-José, N., Moraes Jr, H. V., & Kara-Junior, N. (2015). Corneal Involvement in Systemic Inflammatory Diseases. Eye & contact lens, 41(3), 141-144.


Abstract: Corneal involvement in patients with systemic inflammatory disorders may be sight threatening, and it may be associated with a life-threatening disease. Significant systemic inflammatory diseases in this context are autoimmune connective tissue diseases, systemic autoimmune dermatologic...

AEOPTOMETRISTAS's insight:

Este #articulo revisa las anomalías y las características de la #cornea en el ámbito de las #enfermedades inflamatorias sistémicas.  #investigacion

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June 16, 2015 12:48 AM
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Fluorescence lifetime imaging ophthalmoscopy in type 2 diabetic patients who have no signs of diabetic retinopathy

Fluorescence lifetime imaging ophthalmoscopy in type 2 diabetic patients who have no signs of diabetic retinopathy | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Schweitzer, D., Deutsch, L., Klemm, M., Jentsch, S., Hammer, M., Peters, S., ... & Dawczynski, J. (2015). Fluorescence lifetime imaging ophthalmoscopy in type 2 diabetic patients who have no signs of diabetic retinopathy. Journal of biomedical optics, 20(6), 061106-061106.


Abstract.  The time-resolved autofluorescence of the eye is used for the detection of metabolic alteration in diabetic patients who have no signs of diabetic retinopathy. One eye from 37 phakic and 11 pseudophakic patients with type 2 diabetes, 

AEOPTOMETRISTAS's insight:

..., a change from free to protein-bound reduced nicotinamide adenine dinucleotide at the fundus. AGE also accumulated in the crystalline lens.  #ophthalmoscopy  #DiabeticRetinopathy

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June 9, 2015 12:46 AM
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Factors associated with postoperative pain and analgesic consumption in ophthalmic surgery: A systematic review

Factors associated with postoperative pain and analgesic consumption in ophthalmic surgery: A systematic review | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Lesin, M., Bugarin, J. D., & Puljak, L. (2015). Factors associated with postoperative pain and analgesic consumption in ophthalmic surgery: A systematic review. Survey of ophthalmology, 60(3), 196-203.

 

Abstract   Pain in ophthalmic surgery is a neglected area. We systematically reviewed the factors associated with postoperative pain and analgesic consumption in ophthalmic surgery and found 12 studies with 1,515 participants. The median number of patients in the included studies was 59. Female sex, longer duration of surgical procedure, second eye surgery as a consecutive procedure, type of surgery, general anesthesia, lower satisfaction with anesthesia, and postoperative nausea may contribute to increased postoperative pain intensity

AEOPTOMETRISTAS's insight:

Hay múltiples #factores que pueden estar asociados con un aumento del #dolor y #analgesico postoperatorio

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June 4, 2015 12:15 AM
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Normative data for three tests of visuocognitive function in primary school children: cross-sectional study

Normative data for three tests of visuocognitive function in primary school children: cross-sectional study | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Williams, C., Gilchrist, I. D., Fraser, S., McCarthy, H. M., Parker, J., Warnes, P., ... & Hyvarinen, L. (2015). Normative data for three tests of visuocognitive function in primary school children: cross-sectional study. British Journal of Ophthalmology, 99(6), 752-756.


Background/Aims     There is an increasing recognition that visuocognitive difficulties occur in children with neurodevelopmental problems. We obtained normative data for the performance of primary school children using three tests of visuocognitive function that are practicable in a clinical setting.

AEOPTOMETRISTAS's insight:

 Los datos proporcionan un punto de referencia para juzgar el desempeño de los niños con problemas de desarrollo neurológico y puede ser útil en la evaluación...#escolares #FuncionVisual #cognitivo

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June 4, 2015 12:07 AM
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The role of chromatic variance in modulating color appearance

The role of chromatic variance in modulating color appearance | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Ratnasingam, S., & Anderson, B. L. (2015). The role of chromatic variance in modulating color appearance. Journal of Vision, 15(5), 19-19.


...In this paper, we investigate gamut expansion in greater detail by varying the hue content of the variegated surround with respect to the target hue. 



AEOPTOMETRISTAS's insight:

dicen los autores...no está claro si los mecanismos de control de ganancia pueden explicar completamente el patrón de resultados que obtuvimos   #color #ModulacionCromatica

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June 2, 2015 9:54 AM
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Vitreomacular Interface after Anti–Vascular Endothelial Growth Factor Injections in Neovascular Age-Related Macular Degeneration

Vitreomacular Interface after Anti–Vascular Endothelial Growth Factor Injections in Neovascular Age-Related Macular Degeneration | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Velaoso CE, Kanadani TM, Pereita FB, Nehemy MB,   Vitreomacular Interface after Anti–Vascular Endothelial Growth Factor Injections in Neovascular Age-Related Macular Degeneration  .  

Manuscript no. 2015-331.  Publication stage: In Press Corrected Proof

Purpose

To evaluate the incidence of posterior vitreous detachment (PVD) induced by intravitreal injections of anti–vascular endothelial growth factor (VEGF) agents in cases of neovascular age-related macular degeneration (AMD).

AEOPTOMETRISTAS's insight:

Intravitreal injections of commonly used anti-VEGF intravitreal drugs rarely induce PVD in patients with neovascular AMD. #DMAE

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May 28, 2015 11:36 AM
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Changes in apparent duration follow shifts in perceptual timing

Changes in apparent duration follow shifts in perceptual timing | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Bruno, A., Ayhan, I., & Johnston, A. (2015). Changes in apparent duration follow shifts in perceptual timing. Journal of Vision, 15(6).


Itis well established that the apparent duration of moving visual objects is greater at higher as compared to slower speeds. Here we report the effects of acceleration and deceleration on the perceived duration of a drifting grating with average speed kept constant (10°/s).For acceleration, increasing the speed range progressively reduced perceived duration. The magnitude of apparent duration compression was determined by speed rather than temporal frequency and was proportional to speed range (independent of standard duration) rather than acceleration. The perceived duration reduction was also proportional to the standard length. The effects of increases and decreases in speed were highly asymmetric. 



AEOPTOMETRISTAS's insight:

Detectan cambios similares después de la adaptación #parpadeo, lo que sugiere que los dos efectos podrían estar vinculados a través de cambios en la puesta a punto temporal de los #filtros #visuales.

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May 28, 2015 11:22 AM
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Corneal Thickness Profile and Posterior Corneal Astigmatism in Normal Corneas

Corneal Thickness Profile and Posterior Corneal Astigmatism in Normal Corneas | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Ueno, Y., Hiraoka, T., Miyazaki, M., Ito, M., & Oshika, T. (2015). Corneal thickness profile and posterior corneal astigmatism in normal corneas.Ophthalmology.


Purpose

To analyze the influence of corneal thickness profile on posterior corneal astigmatism (PA).




AEOPTOMETRISTAS's insight:

Corneal thickness is greater in the vertical than in the horizontal direction, making the PA more against-the-rule pattern than calculated on the basis of the anterior corneal curvature measurement only. #cornea

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May 26, 2015 1:08 AM
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Induced Inflammation and Apoptosis in Femtosecond Laser-Assisted Capsulotomies and Manual Capsulorhexes: An Immunohistochemical Study

Induced Inflammation and Apoptosis in Femtosecond Laser-Assisted Capsulotomies and Manual Capsulorhexes: An Immunohistochemical Study | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Toto, L., Calienno, R., Curcio, C., Mattei, P. A., Mastropasqua, A., Lanzini, M., & Mastropasqua, L. (2015). Induced inflammation and apoptosis in femtosecond laser-assisted capsulotomies and manual capsulorhexes: an immunohistochemical study. Journal of refractive surgery (Thorofare, NJ: 1995), 31(5), 290.


PURPOSE:

To evaluate cellular inflammation and apoptosis induced in the central portion of capsulorhexes/capsulotomies during cataract surgery, comparing a conventional manual technique and a femtosecond laser-assisted procedure at different energy settings using two laser systems.

AEOPTOMETRISTAS's insight:

The results show a higher percentage of NF-κB and TUNEL positive cells in the 13.0-µJ group compared to the 7.0-µJ, 10-µJ, and manual groups.#laser #fentosegundo

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May 26, 2015 12:57 AM
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Axial movement of the dual-optic accommodating intraocular lens for the correction of the presbyopia: Optical performance and clinical outcomes

Axial movement of the dual-optic accommodating intraocular lens for the correction of the presbyopia: Optical performance and clinical outcomes | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Tomás-Juan, J., & Larranaga, A. M. G. (2014). Axial movement of the dual-optic accommodating intraocular lens for the correction of the presbyopia: Optical performance and clinical outcomes. Journal of optometry.


Abstract

Presbyopia occurs in the aging eye due to changes in the ciliary muscle, zonular fibers, crystalline lens, and an increased lens sclerosis. As a consequence, the capacity of accommodation decreases, which hampers to focus near objects. With the aim of restoring near vision, different devices that produce multiple focuses have been developed and introduced. However, these devices are still unable to restore accommodation. 




AEOPTOMETRISTAS's insight:

Dual-optic accommodating IOLs present a greater axial displacement in the capsular bag than single-optic accommodating IOL.  #LIO #presbicia

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May 20, 2015 2:19 AM
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A review of myopic choroidal neovascularization treatment in the age of anti-vascular endothelial growth factor agents

A review of myopic choroidal neovascularization treatment in the age of anti-vascular endothelial growth factor agents | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Adatia, F. A., Luong, M., Munro, M., & Tufail, A. (2014). The other cnvm: a review of myopic choroidal neovascularization treatment in the age of anti-vascular endothelial growth factor agents. Survey of Ophthalmology.


Abstract

Choroidal neovascular membranes (CNVM) associated with pathological myopia (PM) can result in significant vision loss and legal blindness. These membranes usually occur subfoveally and are a major complication of PM, developing in approximately 5–10% of such eyes. PM is the second most common cause of choroidal neovascularization after age-related macular degeneration (AMD), and accounts for nearly 60% of CNVM cases in patients younger than age 50. 


AEOPTOMETRISTAS's insight:

The inferior long-term results of alternative therapies, combined with an excellent safety profile from anti-VEGF treatment, make anti-VEGF the current recommended first-line therapy.

#investigcion #bevacizumab #retina #DegeneracionMacular, #ranibizumab 



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May 20, 2015 2:04 AM
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Straylight, lens yellowing and aberrations of eyes in Type 1 diabetes

Straylight, lens yellowing and aberrations of eyes in Type 1 diabetes | GEA-Grupo de Estudios AEOPTOMETRISTAS | Scoop.it

Suheimat, M., Mathur, A., Efron, N., & Atchison, D. A. (2015). Straylight, lens yellowing and aberrations of eyes in Type 1 diabetes. Biomedical optics express, 6(4), 1282-1292.


Abstract

Straylight, lens yellowing and ocular aberrations were assessed in a group of people with type 1 diabetes and in an age matched control group. Most of the former had low levels of neuropathy. Relative to the control group, the type 1 diabetes group demonstrated greater straylight, greater lens yellowing, and differences in some higher-order aberration co-efficients without significant increase in root-mean-square higher-order aberrations. Differences between groups did not increase significantly with age. 

AEOPTOMETRISTAS's insight:

...los resultados sugieren que los cambios relacionados con la #edad en la óptica #ocular de las personas con diabetes, no tienen que acelerarse si la #diabetes está bien controlada.

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