A review of corneal imaging methods for the early diagnosis of pre-clinical Keratoconus
DiscussionCorneal assessment techniques, with the ability to characterise both the anterior and posterior corneal surfaces, are invaluable in the diagnosis of pre-clinical KC. Reflection based and elevation based corneal imaging systems should be used in conjunction with other assessments such as higher order aberration measuring systems to improve sensitivity and reliability in the diagnosis of pre-clinical KC. Ultra high resolution ultrasound can detect pre-clinical KC. The ability to asses both the epithelium and endothelium makes anterior surface optical coherence tomography a superior technique for pre-clinical KC dia...
Source: Journal of Optometry - January 7, 2020 Category: Opthalmology Source Type: research
Data, the future of Science and Clinical Practice
Publication date: January–March 2020Source: Journal of Optometry, Volume 13, Issue 1Author(s): José M. González-Méijome, Rafael Navarro Belsué (Source: Journal of Optometry)
Source: Journal of Optometry - January 3, 2020 Category: Opthalmology Source Type: research
Physicochemical stability of contact lenses materials for biomedical applications
ConclusionNo significant alterations were observed in the physicochemical structure of the materials after dehydration and rehydration showing a good stability of their components. The strong water plasticizing effect in the silicone hydrogel lens materials improves flexibility and chain mobility and may should be considered for other biomedical applications.ResumenObjetivoSe analizaron la estabilidad fisicoquímica, las propiedades térmicas y el efecto plastificante en las propiedades de transporte de las lentes de contacto (LC), para verificar su capacidad de mantener sus propiedades originales tras la deshidratación y...
Source: Journal of Optometry - November 30, 2019 Category: Opthalmology Source Type: research
Relationship between refractive correction, visual symptoms, and optical device selection for low-vision patients in Taiwan
ConclusionsRefractive correction is necessary for the treatment of patients’ visual symptoms and also for the prescription of low-vision aids.ResumenCon arreglo a la ley de Optometría de Taiwán, los servicios de baja visión, tales como la corrección refractiva y la evaluación de la baja visión, se incluyen ahora en la profesión optométrica. Este estudio fue diseñado para investigar la eficiencia de la corrección refractiva y la relación entre corrección refractiva, enfermedades oculares, síntomas visuales, y selección del dispositivo óptico para pacientes con baja visión.MétodosEste estudio incluyó a un...
Source: Journal of Optometry - November 29, 2019 Category: Opthalmology Source Type: research
Reading eye movements in traumatic brain injury
ConclusionReading eye movement performance using ReadAlyzer was found to be decreased in traumatic brain injury. Reading assessment may serve as a clinical measure to understand the oculomotor system following TBI.ResumenObjetivoEl objetivo de este estudio fue medir los movimientos oculares durante el proceso de lectura en sujetos con lesión cerebral traumática (TBI) utilizando ReadAlyzer, un dispositivo de registro objetivo del movimiento del ojo, que rastrea los movimientos oculares durante la lectura.MétodosSe midieron los movimientos oculares durante la lectura utilizando ReadAlyzer en 30 sujetos con TBI (leve, mode...
Source: Journal of Optometry - November 27, 2019 Category: Opthalmology Source Type: research
Patient selection to optimize near vision performance with a low-addition trifocal lens
ConclusionsThe mean corneal power, irregular astigmatism, and centration from vertex normal should be considered for optimizing the near visual performance with this MIOL.ResumenObjetivoValorar el impacto de las variables biométricas oculares sobre el rendimiento visual con una lente intraocular trifocal de baja adición (MIOL).MétodosEstudio observacional retrospectivo que incluyó 34 ojos. Las variables preoperatorias medidas incluyeron potencia corneal media (Km), astigmatismo regular corneal (AR), profundidad de la cámara anterior (ACD), longitud axial (AXL), astigmatismo irregular total (AI), aberración esférica ...
Source: Journal of Optometry - November 1, 2019 Category: Opthalmology Source Type: research
The relationship between clinical measures of aniseikonia and stereoacuity before and after LASIK
ConclusionBinocular function improved in all groups after LASIK except in binocular myopes. In general, binocular function was still low compared with the control group at six months postoperatively. It is unclear why binocular function improved in the binocular astigmats.ResumenObjetivoDeterminar la significancia de cualquier cambio, así como las interrelaciones entre tres marcadores de la función binocular (aniseiconía, estereoagudeza de lejos y de cerca) tras LASIK sin complicaciones a los 3 y 6 meses postoperatorios.MétodosA todos los pacientes se les realizó cirugía LASIK con el laser Schwind Amaris 750S, creán...
Source: Journal of Optometry - October 25, 2019 Category: Opthalmology Source Type: research
The effects of two longpass filters on visual performance
ConclusionsDrive lenses are found to maintain or improve some visual functions compared to the clear lens. The improvement of mesopic visual acuity, visual acuity under glare, and contrast sensitivity is mainly attributed to the reduction of intraocular light scattering as a consequence of the total light attenuation in the spectral range below the cutoff.ResumenObjetivoEste estudio comparó el desempeño visual y las propiedades ópticas de tres filtros.MétodoSe reclutaron dos grupos de veinte adultos: los que utilizaban lentes de adición progresiva (PAL,de 46 a 73 años), y los que utilizaban lentes monofocales (SVL, d...
Source: Journal of Optometry - October 20, 2019 Category: Opthalmology Source Type: research
Comparison of open-ended and close-ended questions to determine signs and symptoms of eye problems among children
ConclusionParents reported more signs and symptoms of eye problems among their children through close-ended questions (regardless of gender) and more diversified categories through open-ended question in this study suggested that different communication approaches might be needed in clinical practice between those who requested specific appointment and those attending screening or routine assessment. The discrepancy might imply the importance to enhance the parent’s role in preventive eye care. Effective communication between eyecare providers and parents has the potential to improve paediatric eyecare delivery.ResumenAn...
Source: Journal of Optometry - October 17, 2019 Category: Opthalmology Source Type: research
Optometry Research Agenda for the Next Decade: 20/20 by 2030
Publication date: October–December 2019Source: Journal of Optometry, Volume 12, Issue 4Author(s): José M. González-Méijome, David Piñero Lloréns, César Villa-Collar (Source: Journal of Optometry)
Source: Journal of Optometry - October 11, 2019 Category: Opthalmology Source Type: research
Does an iPad fixation disparity test give equivalent results to the Mallett near fixation disparity test?
ConclusionAlthough the measured differences between the instruments are not significant in a Wilcoxon analysis, a Bland & Altman approach shows them to be in some cases clinically unacceptable, therefore the instruments should not be used interchangeably. Previous research indicates that the Mallett unit performs reasonably well at detecting symptomatic individuals and determining a prismatic correction that is likely to be helpful. Further research is required to determine the performance of the iPad test in these functions and to assess the reproducibility of both instruments.ResumenAntecedentesSe han desarrollado divers...
Source: Journal of Optometry - September 7, 2019 Category: Opthalmology Source Type: research
Immediate and short term visual recovery after SmartSurfACE photorefractive keratectomy
ConclusionImmediate and short-term visual recovery after SmartSurfACE PRK in our large cohort was rapid, providing functional binocular UDVA immediately after the surgery.ResumenObjetivoInvestigar la recuperación visual inmediata y a corto plazo en una amplia cohorte de 2.093 ojos miópicos (con o sin astigmatismo) tratados con el procedimiento SmartSurfACE, una combinación de Queratectomía Fotorrefractiva Transepitelial (PRK) y SPT (Smart Pulse Technology, SCHWIND eye-tech-solutions GmbH, Kleinostheim, Alemania).MétodosEn esta serie de casos retrospectivos, se evaluaron los resultados post-operatorios inmediatamente t...
Source: Journal of Optometry - August 29, 2019 Category: Opthalmology Source Type: research
Microbial safety implications of in-use topical diagnostic ophthalmic medications in eye clinics in Ghana
ConclusionTopical diagnostic ophthalmic preparations used in clinical settings in Ghana are contaminated with clinically important bacteria and fungi.ResumenObjetivoDeterminar los contaminantes microbianos y su importancia clínica en los fármacos oftálmicos diagnósticos tópicos (ciclopléjicos/midriáticos y mióticos) en clínicas oftalmológicas de Gana.MétodoSe realizó una muestra transversal de clínicas oftalmológicas para los agentes diagnósticos (Atropina, Fenilefrina, Tropicamida y Ciclopentolato, Pilocarpina). Se observaron procedimientos y protocolos de laboratorio estándar en cuanto al cultivo de muest...
Source: Journal of Optometry - August 29, 2019 Category: Opthalmology Source Type: research
Advances in diagnostic applications for monitoring intraocular pressure in Glaucoma: A review
Publication date: Available online 10 August 2019Source: Journal of OptometryAuthor(s): Irene Sanchez, Raul MartinAbstractContinuous intraocular pressure (IOP) monitoring for improving glaucoma diagnosis and treatment has remained a challenge for the past 60 years because glaucoma is the second leading cause of irreversible blindness worldwide. Several devices with different measurement principles and recently developed biosensors with semiconductor materials offer exciting properties. However, none of these devices for continuous IOP monitoring have been fully integrated into clinical practice, primarily due to technical ...
Source: Journal of Optometry - August 10, 2019 Category: Opthalmology Source Type: research
Ocular surface response and subjective symptoms associated to lens care solutions in Palestine
ConclusionThe combination of Bioxifilcon-B hydrogel contact lenses and solution containing PHMB, PAPB and Phx-disinfectants induced a significant increase in corneal staining after 2 h of CL-wear with a higher severity when the PHMB-based solution was used, while the PQ-1 + Alexidine-based solution did not. Only the PHMB-based solution triggered a significant change in subjective symptoms which might which suggests that it might be related to the severity of staining rather than the induction of staining.ResumenObjetivoComparar la biocompatibilidad y los síntomas subjetivos de cuatro soluciones multiusos co...
Source: Journal of Optometry - July 20, 2019 Category: Opthalmology Source Type: research
