 Your new post is loading...
Your new post is loading...
Scoop.it!
Kato, A., Yasukawa, T., Suga, K., Hirano, Y., Nozaki, M., Yoshida, M., & Ogura, Y. (2015). Intravitreal Ranibizumab for Patients with Neovascular Age-Related Macular Degeneration with Good Baseline Visual Acuity.Ophthalmologica, 233(1), 27-34. Purpose: To report the 1-year results of intravitreal ranibizumab (IVR) injections for neovascular age-related macular degeneration (nAMD) in patients with good baseline visual acuity (VA).
AEOPTOMETRISTAS's insight:
...mejoró los cambios morfológicos en la DMAE húmeda con buena AV
No comment yet.
Sign up to comment
Scoop.it!
Wang, X., Neely, A. J., McIlwaine, G. G., Tahtali, M., Lillicrap, T. P., & Lueck, C. J. (2014). Finite element modeling of optic chiasmal compression. Journal of Neuro-Ophthalmology, 34(4), 324-330. Background: The precise mechanism of bitemporal hemianopia is still not clear. Our study investigated the mechanism of bitemporal hemianopia by studying the biomechanics of chiasmal compression caused by a pituitary tumor growing below the optic chiasm.
AEOPTOMETRISTAS's insight:
Los resultados de esta simulación del modelo de quiasma macroscópica son correctas pero específicamente, se mostró que la diferencia de tensión entre las fibras nerviosas cruzadas y no cruzadas puede explicar el daño selectivo a los nervios que da lugar a hemianopsia bitemporal.
Scoop.it!
Karalezli, A., Simsek, C., Celik, G., & Eroglu, F. C. (2014). Evaluation of choroidal thickness using spectral-domain optical coherence tomography in migraine patients during acute migraine attacks: a comparative study. Eye. Purpose
In this prospective case–control study, choroidal thicknesses of 46 migraine patients during acute migraine attacks and 46 age- and sex-matched healthy subjects were measured using a high-speed, high-resolution frequency domain-OCT device. All patients underwent a complete ophthalmic examination before the measurements. OCT measurements were taken at the same time of day (0900 hours), in order to minimize the effects of diurnal variation.
AEOPTOMETRISTAS's insight:
Se necesitan más estudios para evaluar la relación entre la etiopatología del aumento de grosor coroideo y ataque de migraña aguda.
Scoop.it!
Bu, S. C., Kuijer, R., Li, X. R., Hooymans, J. M., & Los, L. I. (2014). IDIOPATHIC EPIRETINAL MEMBRANE. RETINA, 34(12), 2317-2335. Background: Idiopathic epiretinal membrane (iERM) is a fibrocellular membrane that proliferates on the inner surface of the retina at the macular area. Membrane contraction is an important sight-threatening event and is due to fibrotic remodeling.
AEOPTOMETRISTAS's insight:
Una mejor comprensión de los mecanismos moleculares podría conducir eventualmente al desarrollo de enfoques eficaces y no quirúrgicos para tratar y prevenir las enfermedades fibróticas vitreorretinianas.
Scoop.it!
Sharma, H. E., Mathewson, P. A., Lane, M., Shah, P., Glover, N., Palmer, H., ... & Tsaloumas, M. D. (2014). The role of social deprivation in severe neovascular age-related macular degeneration. British Journal of Ophthalmology, bjophthalmol-2014.Abstract Background/aims Advances in therapy have improved outcomes for patients with neovascular age-related macular degeneration (nAMD). Prompt access to treatment is a priority and may be used as a key performance indicator. In this study, we investigate how social deprivation may impact on access to services, treatment and visual impairment registration.
AEOPTOMETRISTAS's insight:
El estudio sugiere que hay un grupo vulnerable que se encuentra con barreras en el acceso al tratamiento en Dmae exudativa.
Scoop.it!
Yu, Y., Zhu, Y., Dong, A., & Su, Z. (2014). Retinal artery occlusion as the manifestation of left atrial myxoma: a case report. BMC ophthalmology, 14(1), 164. Background Retinal artery occlusion caused by myxoma is relatively rare. There are several points that should be taken into consideration to avoid overlooking this disorder.
AEOPTOMETRISTAS's insight:
In any patients with retinal artery occlusion, detailed medical history and echocardiography should be carried out to exclude heart diseases.
Scoop.it!
Vincent, S. J., Alonso-Caneiro, D., & Collins, M. J. (2014). Corneal changes following short-term miniscleral contact lens wear. Contact Lens and Anterior Eye, 37(6), 461-468. To examine the influence of short-term miniscleral contact lens wear on corneal shape, thickness and anterior surface aberrations.
AEOPTOMETRISTAS's insight:
Modern miniscleral contact lenses that vault the cornea may slightly influence corneal shape and power but do not induce clinically significant corneal oedema during short-term wear.
Scoop.it!
Humayun, M., Santos, A., Altamirano, J. C., Ribeiro, R., Gonzalez, R., de la Rosa, A., ... & Caffey, S. (2014). Implantable MicroPump for Drug Delivery in Patients with Diabetic Macular Edema. Translational Vision Science and Technology, 3(6). Purpose: To demonstrate the safety and surgical feasibility of the first-in-man ocular implant of a novel Posterior MicroPump Drug Delivery System (PMP) in patients with diabetic macular edema (DME) and to report on the device capabilities for delivering a programmable microdose.
AEOPTOMETRISTAS's insight:
Este estudio demuestra la primera en su hombre de seguridad del implante Replenish MICROPUMP por un período de 90 días...
Scoop.it!
Holló, G. (2014). Exfoliation Syndrome and Systemic Cardiovascular Diseases.Journal of glaucoma, 23, S9-S11. Exfoliation syndrome (XFS) is a systemic condition. Intraocular alterations represent only a part of the exfoliation-related clinical signs. Exfoliation material has been identified in the visceral organs, skin, and vessel walls. This triggered several studies that investigated association betwee...
AEOPTOMETRISTAS's insight:
El mecanismo exacto del desarrollo de la desregulación vascular sistémica asociada con síndrome de exfoliación es actualmente desconocido.
Scoop.it!
Rajalakshmy, A. R., Malathi, J., Madhavan, H. N., Bhaskar, S., & Iyer, G. K. (2015). Patients With Dry Eye Without Hepatitis C Virus Infection Possess the Viral RNA in Their Tears. Cornea, 34(1), 28-31. Purpose:Dry eye is one of the suggested extrahepatic complications associated with hepatitis C virus (HCV) infection. HCV RNA has been detected from the tear fluid of patients with chronic HCV. There has been no literature evidence on the presence of HCV RNA in the tear fluid of patients with dry...
AEOPTOMETRISTAS's insight:
Estos resultados indican una correlación directa entre el ojo seco y virus de hepatitis C en la lágrima de pacientes no infectados de hepatitis C.
Scoop.it!
Brown, S. E., Simmasalam, R., Antonova, N., Gadaria, N., & Asbell, P. A. (2014). Progression in Keratoconus and the Effect of Corneal Cross-Linking on Progression. Eye & contact lens, 40(6), 331-338. Ultraviolet corneal collagen cross-linking (CXL) has been shown to possibly delay, halt, or even reverse disease progression in keratoconus. Understanding of keratoconic progression in untreated eyes, however, is still incomplete and is hampered by the varying definitions and metrics used to evaluate corneal changes
AEOPTOMETRISTAS's insight:
Se necesitan indicadores para definir mejor la progresión en el queratocono.
Scoop.it!
Behzad Aliahmad, Dinesh Kant Kumar, Marc George Sarossy and Rajeev JainBMC Ophthalmology 2014, 14:152 Background: Diabetes mellitus is rapidly increasing in the Indian population. The purpose of this study was to identify changes in the retinal vasculature of diabetic people, ahead of visual impairments. Grayscale Fractal Dimension (FD) analysis of retinal images was performed on people with type 2 diabetes from an Indian population.
AEOPTOMETRISTAS's insight:
...existe una diferencia significativa entre la FD de las personas diabéticas y saludables en la población indígena.
Scoop.it!
Varma, D. K., Belovay, G. W., Tam, D. Y., & Ahmed, I. I. K. (2014). Malignant glaucoma after cataract surgery. Journal of Cataract & Refractive Surgery. Purpose Setting Design Methods
AEOPTOMETRISTAS's insight:
El glaucoma maligno puede aparecer después de la facoemulsificación y se presenta con miopía, estrechamiento de la cámara anterior y, posiblemente, la PIO elevada.
|
Scoop.it!
Hos, D., Heindl, L. M., Bucher, F., & Cursiefen, C. (2015). Novel Lamellar, Flap-Based Tattooing Techniques for Corneal Opacities in Scarred and Vascularized Blind Eyes. Cornea, 34(1), 82-86. Purpose: The aim of this study was to describe novel, flap-based tattooing techniques for the treatment of disfiguring corneal scars in blind eyes.
AEOPTOMETRISTAS's insight:
Estas nuevas técnicas de superficie corneal, son alternativas a los procedimientos previamente reportados y se pueden adaptar a la constitución de la córnea individual en casos de córneas dañadas.
Scoop.it!
AEOPTOMETRISTAS's insight:
Trabajo fin de grado Grado en Óptica y Optometría Universidad de Zaragoza Hugo Jesús Piquer Sánchez Bajo la supervisión de: Mª Victoria Collados Collados y Juan Antonio Vallés Brau Departamento de Física Aplicada. Universidad de Zaragoza
Scoop.it!
Leung, V. C., Jin, Y. P., Hatch, W., Mammo, Z., Trope, G. E., Buys, Y. M., & Macrae, W. G. (2015). The Relationship Between Sociodemographic Factors and Persistence With Topical Glaucoma Medications. Journal of glaucoma,24(1), 69-76. Purpose: To investigate the relationship between sociodemographic factors and nonpersistence with topical glaucoma medication.
AEOPTOMETRISTAS's insight:
Un nivel socioeconómico por debajo de la media puede influir negativamente en el cumplimiento de del tratamiento con medicamentos tópicos para el glaucoma, amenazando potencialmente los resultados visuales a largo plazo.
Scoop.it!
Sy, M. E., Zhang, L., Yeroushalmi, A., Huang, D., & Hamilton, D. R. (2014). Effect of mitomycin-C on the variance in refractive outcomes after photorefractive keratectomy. Journal of Cataract & Refractive Surgery, 40(12), 1980-1984.Purpose
To compare the variance in manifest refraction spherical equivalent (MRSE) after photorefractive keratectomy (PRK) with mitomycin-C (MMC), PRK without MMC, and laser in situ keratomileusis (LASIK) for the treatment of myopic astigmatism. SettingJules Stein Eye Institute, University of California, Los Angeles, Los Angeles, California, USA. DesignRetrospective case series.
AEOPTOMETRISTAS's insight:
Los resultados refractivos después de PRK para miopía fueron más variables cuando se utilizó MMC 0,02%. Por eso se debe sopesar la ventaja de la utilización intraoperatoria de MMC en la reducción de neblina después de PRK.
Scoop.it!
Wiecek, E., Dakin, S. C., & Bex, P. (2014). Metamorphopsia and letter recognition. Journal of vision, 14(14), 1.Abstract
Acuity is the most commonly used measure of visual function, and reductions in acuity are associated with most eye diseases. Metamorphopsia—a perceived distortion of visual space—is another common symptom of visual impairment and is currently assessed qualitatively using Amsler (1953) charts. In order to quantify the impact of metamorphopsia on acuity, we measured the effect of physical spatial distortion on letter recognition. Following earlier work showing that letter recognition is tuned to specific spatial frequency (SF) channels, we hypothesized that the effect of distortion might depend on the spatial scale of visual distortion just as it depends on the spatial scale of masking noise. Six normally sighted observers completed a 26 alternate forced choice (AFC) Sloan letter identification task at five different viewing distances, and the letters underwent different levels of spatial distortion. Distortion was controlled using spatially band-pass filtered noise that spatially remapped pixel locations.
AEOPTOMETRISTAS's insight:
La interacción entre el tamaño de la letra y la distorsión hace a la agudeza visual un resultado poco fiable para la evaluación de metamorfopsias.
Scoop.it!
Zheng, B., Shen, L., Walker, M. K., Zhang, Z., Zheng, J., She, X., ... & Chen, Y. (2015). Clinical Evaluation of Rigid Gas Permeable Contact Lenses and Visual Outcome After Repaired Corneal Laceration. Eye & contact lens, 41(1), 34-39. Objective:To evaluate the clinical value of rigid gas permeable contact lenses (RGPCLs) in patients with traumatic corneal scarring and address implications of primary corneal repair.
AEOPTOMETRISTAS's insight:
Pentacam examinations of those patients with poor RGPCLVA can help an ophthalmologist find and understand existing problems in suture techniques.
Scoop.it!
Grossniklaus, H. E., Nickerson, J. M., Edelhauser, H. F., Bergman, L. A., & Berglin, L. (2013). Anatomic Alterations in Aging and Age-Related Diseases of the Eye. Investigative ophthalmology & visual science, 54(14), ORSF23-ORSF27. Purpose. We described anatomic age-related changes in the human eye to determine potential areas of investigation that may lead to identifying eyes at risk for age-related disease.
AEOPTOMETRISTAS's insight:
Las áreas actuales de investigación relacionada con estos cambios incluyen la óptica adaptativa de escaneo de imágenes oftalmoscopia láser de la RPE de mosaico en el contexto del envejecimiento...
Scoop.it!
Gecevičius, M., Beresna, M., Drevinskas, R., & Kazansky, P. G. (2014). Airy beams generated by ultrafast laser-imprinted space-variant nanostructures in glass. Optics Letters, 39(24), 6791-6794. We demonstrate a technique to generate accelerating Airy beams with a femtosecond laser-imprinted space variant birefringent structure in silica glass. Our approach enables the generation of dual Airy beams with polarization sensitive beam deflection.
AEOPTOMETRISTAS's insight:
El haz producido se utiliza para el trazado de vidrio.
Scoop.it!
Eye - Abstract of article: Impact of laser refractive surgery on ocular alignment in myopic patients
Chung, S. A., Kim, W. K., Moon, J. W., Yang, H., Kim, J. K., Lee, S. B., & Lee, J. B. (2014). Impact of laser refractive surgery on ocular alignment in myopic patients. Eye, 28(11), 1321-1327.Abstract
Patients with a mean age of 26.6 years and a mean refractive error of −4.83 diopters (D) myopia were treated. Asymptomatic ocular misalignment was present preoperatively in 46 (47%) patients: a small-angle heterophoria (1–8 prism diopters, PD) in 36%; and a large-angle heterophoria (>8 PD)/heterotropia in 11%. Postoperatively, the change in angles of 10 PD or greater occurred in 3% for distance and 6% for near fixation: in 7% of the patients with orthophoria, in 3% of those with a small-angle heterophoria, and in 18% of those with a large-angle heterophoria/heterotropia. No patient developed diplopia.
AEOPTOMETRISTAS's insight:
La cirugía refractiva miópica puede causar un cambio en la alineación ocular, especialmente en los casos con un gran ángulo heteroforia / heterotropía. También hay una posibilidad de mejora de la desalineación en pacientes con anisometropía.
Scoop.it!
Pasquale Aragona, Laura Rania, Anna Maria Roszkowska, Domenico Puzzolo, Antonio Micali, Antonina Pisani, Giuseppina Salzano and Maria Francesca Messina BMC Ophthalmology 2014, 14:155 doi:10.1186/1471-2415-14-155 Published: 8 December 2014 Allgrove's 4A syndrome determines ocular surface changes. This is the first report providing an up-to-dated analysis of the ocular surface in an affected patient.
AEOPTOMETRISTAS's insight:
El ojo seco en este paciente parece ser debido a la deficiencia de lágrima acuosa y puede ser considerado como parte del síndrome de 4A.
Scoop.it!
The role of multi-purpose solutions in prevention and removal of lipid depositions on contact lenses
Tam, N. K., Pitt, W. G., Perez, K. X., Handly, E., Glenn, A. A., Hickey, J. W., & Larsen, B. G. (2014). The role of multi-purpose solutions in prevention and removal of lipid depositions on contact lenses. Contact Lens and Anterior Eye,37(6), 405-414. The sorption and desorption of radiolabeled dipalmitoylphosphatidylcholine (DPPC) and cholesterol (CH) were measured on 5 types of commercial contact lenses. The lenses were soaked in vitro in an artificial tear fluid for 16 h.
AEOPTOMETRISTAS's insight:
En los experimentos de adsorción sin remojo previo, la exposición posterior a la solución multiuso para el cuidado de las lentes difiere un poco en las lentes DPPC (0-3,1% para las lentes SiHy y 14-55% para Polymacon), ...
Scoop.it!
García-Resúa, C., Pena-Verdeal, H., Lira, M., Penedo, M. G., Giráldez, M. J., & Yebra-Pimentel, E. (2013, November). Interobserver and intraobserver repeatability of lipid layer pattern evaluation by two experienced observers. In8th Ibero American Optics Meeting/11th Latin American Meeting on Optics, Lasers, and Applications (pp. 8785AE-8785AE). International Society for Optics and Photonics.Purpose: The lipid layer plays a major role in limiting evaporation of the tear film. Based on interference phenomena, there is a test directed to lipid layer pattern (LLP) evaluation, but is affected by subjective interpretation of the patterns. The aim of this study is to compare the LLP evaluation between two experienced observers on a group of healthy patients. Furthermore, observers re-evaluated the same images to check their individual repeatability.
AEOPTOMETRISTAS's insight:
... Algunas malas interpretaciones entre los patrones adyacentes podrían paliarse mediante la inclusión de modelos intermedios entre esas categorías.
|
