Beta2 adrenergic receptor silencing change intraocular pressure in New Zealand rabbits
ConclusionThe use of siRNA against the beta2 adrenergic receptors could provide an interesting therapeutic strategy for glaucoma treatment.ResumenObjetivoEl glaucoma consiste en un grupo de neuropatías ópticas progresivas caracterizadas por degeneración del nervio óptico y pérdida irreversible del campo visual. La elevación de la presión intraocular es el único factor de riesgo tratable probado, centrándose los productos comerciales para el tratamiento del glaucoma en la reducción de la presión intraocular. Estos fármacos pueden tener diversos efectos secundarios indeseados, lo cual invita a buscar nuevas estra...
Source: Journal of Optometry - July 5, 2018 Category: Opthalmology Source Type: research
More sensitive correlation of afferent pupillary defect with ganglion cell complex
ConclusionsSignificant correlations between RNFLT loss for cpRNFLT, pcpRNFLT and GCC parameters with RAPD were observed. Approximately a 35% higher sensitivity was obtained using GCC compared to CRNFL parameters. The expected change in GCC average for every 0.3 log unit increment was approximately 8.49 μm. The FLV% corresponded more sensitively to a RAPD but appeared to be influenced by disease severity.ResumenObjetivoEste estudio investigó la correlación entre el defecto pupilar aferente relativo (DPAR) y el grosor de la capa de fibras nerviosas de la retina (RNFLT) en la neuropatía óptica.MétodosLa valora...
Source: Journal of Optometry - July 5, 2018 Category: Opthalmology Source Type: research
Orbital magnetic resonance imaging is useful in age-related distance esotropia
ConclusionsMRI showed that displacements of LR and LR–SR band degeneration could facilitate the diagnosis of patients with ARDE.ResumenObjetivoDescribir los hallazgos encontrados en la resonancia magnética orbitaria (RMN) en pacientes con esotropía asociada a la edad (ETAE).MétodosComparamos 31 RMN orbitarias de pacientes con ETAE (77 ± 7 DE años) con 2 grupos control: 32 órbitas de individuos con edades comprendidas entre 18 y 50 años (33 ± 8 DE años) y 16 órbitas de individuos con edades>60 años (77 ± 7 DE años). Las RMN se adquirieron utilizando eco de campo rápido 3D en sec...
Source: Journal of Optometry - July 5, 2018 Category: Opthalmology Source Type: research
Influence of refractive error on pupillary dynamics in the normal and mild traumatic brain injury (mTBI) populations
ConclusionsOver a range of dynamic and static pupillary parameters, the PLR was influenced by refractive error in both populations. In cases of high refractive error, the PLR parameters may need to be compensated for this factor for proper categorization and diagnosis.ResumenObjetivoExisten diversos estudios que han investigado el diámetro pupilar estático y basal en individuos con visión normal en todo el espectro de errores refractivos. Sin embargo, ninguno de ellos ha evaluado el reflejo dinámico pupilar a la luz (RPL). En el presente estudio, se evaluaron tanto los parámetros pupilares estáticos como los dinámic...
Source: Journal of Optometry - July 5, 2018 Category: Opthalmology Source Type: research
Assessment of neuro-optometric rehabilitation using the Developmental Eye Movement (DEM) test in adults with acquired brain injury
DiscussionThe results of the present study demonstrated considerable improvements in the DEM test scores following the oculomotor-based training, thus reflecting more time-optimal and accurate saccadic tracking after the training. The DEM test should be considered as another clinical test of global saccadic tracking performance in the ABI population.ResumenObjetivoEste estudio piloto trató de determinar la eficacia del uso de la prueba DEM (Developmental Eye Movement) en la población adulta con daño cerebral adquirido (DCA) para cuantificar clínicamente los efectos de la rehabilitación/terapia visual controlada, reali...
Source: Journal of Optometry - July 5, 2018 Category: Opthalmology Source Type: research
Agreement between total corneal astigmatism calculated by vector summation and total corneal astigmatism measured by ray tracing using Galilei double Scheimpflug analyzer
ConclusionThe magnitudes and axes of astigmatisms measured by the vector summation and ray tracing methods cannot be used interchangeably. There was a systematic error between the TCAVec and TCARay magnitudes.ResumenObjetivoEvaluar la concordancia entre el astigmatismo corneal total calculado mediante suma de los vectores del astigmatismo corneal anterior y posterior (TCAVec), y el astigmatismo corneal total medido mediante trazado de rayos (TCARay).MétodosEste estudio incluyó a un total de 204 ojos derechos de 204 sujetos normales. Los ojos se midieron utilizando un analizador Galilei de doble cámara Scheimpflug. Los p...
Source: Journal of Optometry - July 5, 2018 Category: Opthalmology Source Type: research
Visual outcomes and management after corneal refractive surgery: A review
Publication date: April–June 2018Source: Journal of Optometry, Volume 11, Issue 2Author(s): Ane Murueta-Goyena, Pilar CañadasAbstractCorneal refractive surgery procedures are widely performed to permanently correct refractive errors. Overall, refractive surgeries are safe, predictable and present high rates of satisfaction. Nevertheless, the induced epithelial, stromal and nerve damage alters corneal integrity and function, triggering a regenerative response. Complications that arise from corneal wound healing process might directly impact on visual outcomes of keratorefractive procedures. Most of these complications ca...
Source: Journal of Optometry - July 5, 2018 Category: Opthalmology Source Type: research
Evaluation of Goldmann applanation tonometry, rebound tonometry and dynamic contour tonometry in keratoconus
Publication date: April–June 2018Source: Journal of Optometry, Volume 11, Issue 2Author(s): Maddalena De Bernardo, Nicola Rosa (Source: Journal of Optometry)
Source: Journal of Optometry - July 5, 2018 Category: Opthalmology Source Type: research
Reply to comment by De Bernardo and Rosa on “Evaluation of Goldmann applanation tonometry, rebound tonometry and dynamic contour tonometry in keratoconus”
Publication date: April–June 2018Source: Journal of Optometry, Volume 11, Issue 2Author(s): Fatih Özcura, Nilgün Yıldırım (Source: Journal of Optometry)
Source: Journal of Optometry - July 5, 2018 Category: Opthalmology Source Type: research
Avoiding misinterpretations of Kappa angle for clinical research studies with Pentacam
Publication date: Available online 4 April 2018Source: Journal of OptometryAuthor(s): Manuel Rodríguez-Vallejo, David P. Piñero, Joaquín Fernández (Source: Journal of Optometry)
Source: Journal of Optometry - July 5, 2018 Category: Opthalmology Source Type: research
Effect of age in the ciliary muscle during accommodation: Sectorial analysis
ConclusionThe anterior ciliary muscle area tends to increase with accommodation. The presbyopic nasal, inferior, and temporal ciliary muscle seem to have the same contractile capability as the young presbyopic ciliary muscle. These results might help to increase the evidences in the knowledge regarding the modern understanding of accommodation biometry and biomechanics.ResumenObjetivoComparar los cambios en el área del músculo ciliar en diferentes sectores entre ojos con pre-presbicia y presbicia durante la acomodación, por medio de un tomógrafo de coherencia óptica (OCT) de segmento anterior.MétodosSe midió el áre...
Source: Journal of Optometry - July 5, 2018 Category: Opthalmology Source Type: research
Enantiomorphism and rule similarity in the astigmatism axes of fellow eyes: A population-based study
ConclusionBilateral astigmatism is mainly isorule in the population and anisorule astigmatism is rare. The enantiomorphism is the most common pattern in the population of bilateral astigmatism.ResumenObjetivoEvaluar los patrones de la relación entre los ejes del astigmatismo en ojos contralaterales (similitud de la regla y simetría), y determinar la prevalencia de cada patrón en la población estudiada.MétodosEste estudio poblacional se llevó a cabo en Irán en 2015. A todos los participantes se les realizaron pruebas de agudeza visual, refracción objetiva, refracción subjetiva (de cooperar el paciente), y valoraci...
Source: Journal of Optometry - July 5, 2018 Category: Opthalmology Source Type: research
Influence of contrast polarity on the accommodative response
ConclusionsContrast polarity does not seem to influence the accommodative response when reading text from an electronic microdisplay.ResumenObjetivoEvaluar los cambios de la respuesta acomodativa del ojo al leer un texto en diferentes condiciones de polaridad de contraste: letras negras sobre fondo blanco (condición BoW) y letras blancas sobre fondo negro (condición WoB).MétodosEn este estudio experimental participaron dieciocho sujetos de edades comprendidas entre 21 y 41 años. Se obtuvo objetivamente la respuesta acomodativa (AR) del ojo al leer un texto con polaridad de contraste BoW o WoB con un sistema de óptica ...
Source: Journal of Optometry - July 5, 2018 Category: Opthalmology Source Type: research
Effect of distance vision and refractive error on the spontaneous eye blink activity in human subjects in primary eye gaze
ConclusionsThe studies indicate that some form of visual target could be useful to promote constancy of spontaneous eye blink activity over time, but that a distance visual target (when provided) does not need to be seen clearly.ResumenObjetivoEvaluar si el tipo y visibilidad del objetivo visual afecta a la tasa de parpadeo espontáneo del ojo (SEBR) en posición primaria de la mirada y en silencio.MétodosSe realizaron grabaciones de vídeo de jóvenes adultos sanos, emétropes (n = 32), o que utilizaban gafas para el error refractivo (rango: –4,75 D y +4,5 D (n = 31). Se realizaron grabaciones de 5&...
Source: Journal of Optometry - July 5, 2018 Category: Opthalmology Source Type: research
Expanding the traditional role of optometry: Current practice patterns and attitudes to enhanced glaucoma services in Ireland
ConclusionIrish optometrists are well equipped with the traditional tests used in glaucoma detection. However, implementation of enhanced referral schemes or glaucoma monitoring or management services would require equipment upgrades and associated training in at least half of the surveyed practices. There is strong interest in furthering optometric professional development and expanding the traditional role boundaries of optometrists, incorporating further education as an essential prerequisite to an enhanced scope of practice.ResumenObjetivoEstudiar la disponibilidad actual y el uso del equipo diagnóstico para la detecc...
Source: Journal of Optometry - July 5, 2018 Category: Opthalmology Source Type: research
