Person:
Antona Peñalba, Beatriz

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First Name
Beatriz
Last Name
Antona Peñalba
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Óptica y Optometría
Department
Optometría y Visión
Area
Optica
Identifiers
UCM identifierORCIDScopus Author IDDialnet IDGoogle Scholar ID

Search Results

Now showing 1 - 10 of 24
  • Publication
    PhDAY 2020 -FOO (Facultad de Óptica y Optometría)
    (Facultad de Óptica y Optometría (UCM), 2020) Carpena Torres, Carlos; Pintor, Jesús; Pérez de Lara, María Jesús; Toral, Fernando; Crooke, Almudena; Pastrana, Cristina; Carracedo Rodríguez, Juan Gonzalo; Cayuela López, Ana; Sorzano Sánchez, Óscar; Charbel, Carla; Garzón Jiménez, Nuria; Carballo Álvarez, Jesús; Diz Arias, Elena; Fernández Jiménez, Elena; Peral Cerdá, Assumpta; Gómez Pedrero, José Antonio; Durán Prieto, Elena; López Alonso, José Manuel; Fernández Torres, Miguel Ángel; Guzmán Aránguez, Ana Isabel; Gómez Manzanares, Ángela; Vázquez Moliní, Daniel; Martínez Antón, Juan Carlos; Bernárdez Vilaboa, Ricardo; Mayorga Pinilla, Santiago; Álvarez Fernández-Balbuena, Antonio; Benítez, AntoJ.; El Youssfi, Asmae Igalla; León Álvarez, Alejandro; Palomo Álvarez, Catalina; LLedó Mayans, Victoria Eugenia; Awad Alkozi, Hanan; Sánchez Naves, Juan; Martínez Alberquilla, Irene; García Montero, María; Ruiz Alcocer, Javier; Madrid Costa, David; Martínez Florentín, Gema; Papas, Eric B.; Medrano Muñoz, Sandra Milena; Molina, Nancy; Jurado, Sandra; Oliveiros López, Juan; Platero Alvarado, Nadiuska Cristine; Garrido Mercado, Rafaela; Pérez Garmendia, Carlos; Antona Peñalba, Beatriz; Barrio de Santos, Ana Rosa; González Pérez, Mariano; Pérez Garmendia, Carlos; Serramito Blanco, María; Privado Aroco, Ana; Almalki, Wael; Bodas Romero, Julia; Ouzzani, Mohamed; Paune, Jaume; Calderón García, Raquel; Pitarch Velasco, Aida; Cebrián, José Luis; Sánchez Pérez, Isabel; García Rojo, Marta María; Bonnin Arias, Cristina; Sánchez Ramos, Celia; Gutiérrez Jorrín, Sara Carmen; Rodríguez Alonso, Xabier; Laucirica Sáenz, Gorka; Arranz Márquez, Esther; Alonso Castellanos, Miriam; Teus Guezala, Miguel Ángel; Hernández Verdejo, José Luis; Mármol Errasti, Esther; Martín García, Beatriz; Arriola Villalobos, Pedro; Gómez de Liaño, Rosario; Mínguez Caro, N; Orduña Azcona, Javier; Navarro Gil, Francisco Javier; Huete Toral, Fernando; Rodríguez Pomar, Candela; Pastrana Robles, Cristina; Martínez Águila, Alejandro; Martín Gil, Alba; Tomé de la Torre, Miguel Ángel
    Por cuarto año consecutivo los doctorandos de la Facultad de Óptica y Optometría de la Universidad Complutense de Madrid cuentan con un congreso propio organizado por y para ellos, el 4º PhDAY- FOO. Se trata de un congreso gratuito abierto en la que estos jóvenes científicos podrán presentar sus investigaciones al resto de sus compañeros predoctorales y a toda la comunidad universitaria que quiera disfrutar de este evento. Apunta en tu agenda: el 15 de octubre de 2020. En esta ocasión será un Congreso On-line para evitar que la incertidumbre asociada a la pandemia Covid-19 pudiera condicionar su celebración.
  • Publication
    Repeatability of the Modified Thorington Card Used to Measure Far Heterophoria
    (Lippincott Williams & Wilkins, 2014-07) Cebrián, José Luis; Antona Peñalba, Beatriz; Barrio de Santos, Ana Rosa; González Díaz-Obregón, Enrique; Gutiérrez Hernández, Ángel Luis; Sánchez Pérez, María Isabel
    Purpose. To determine the interexaminer and intraexaminer repeatability of the modified Thorington test (TH) for distance vision in young adults and to compare these results with those observed for the heterophoria tests most commonly used in clinical practice. Agreement among tests was also assessed. Methods. Distance heterophoria was quantified on two separate occasions by two examiners in 110 subjects aged 18 to 32 years (mean, 19.74 years; SD, 2.5 years) using four different tests: cover test (CT) Von Graefe, Maddox rod, and modified TH. The repeatability of the tests and agreement between them was estimated by the Bland and Altman method whereby the mean difference and the 95% limits of agreement were determined as the coefficient of repeatability (COR) and coefficient of agreement. Results. The Thorington test showed best interexaminer repeatability (COR = +/- 1.43 Delta), followed closely by CT (COR = +/- 1.65 Delta), whereas best intraexaminer repeatability was observed for CT (COR = +/- 1.28 Delta) followed by TH (COR = +/- 1.51 Delta). Among the different combinations of tests, TH and CT showed best agreement indicated by the lowest coefficient of agreement (+/- 2.23 Delta) and a low mean difference (-0.63 Delta) between measurements. Conclusions. Good interexaminer and intraexaminer repeatability was observed for both TH and CT, and agreement between the two tests was also good. Given the simple administration of the TH, we recommend its clinical use to quantify distance horizontal heterophoria.
  • Publication
    Comparing methods of determining addition in presbyopes
    (Wiley, 2008-05-09) Antona Peñalba, Beatriz; Barra Lázaro, Francisco; Barrio de Santos, Ana Rosa; Gutiérrez Hernández, Ángel Luis; Piedrahita Alonso, Mª Elena; Martín Pérez, Yolanda
    Background: The use of plus lenses to compensate for the reduction in the range of accommodation associated with presbyopia, brings the near point of accommodation to a comfortable distance for near visual tasks. Our aim was to compare the tentative near addition determined using the most common procedures with the final addition prescribed in presbyopic patients. Methods: Sixty-nine healthy subjects with a mean age of 51.0 years (range 40 to 60 years) were studied. Tentative near additions were determined using seven different techniques: dynamic retinoscopy, amplitude of accommodation (AA), age-expected addition, binocular fused cross-cylinder with and without myopisation, near duochrome, and balance of negative and positive relative accommodation. The power of the addition was then refined to arrive at the final addition. Results: The mean tentative near additions were higher than the final addition for every procedure except for the fused cross-cylinder without initial myopisation and ageexpected addition methods. These biases were small in clinical terms (less than 0.25 D) with the exception of the AA procedure (0.34 D). The intervals between the 95% limits of agreement differed substantially and were always higher than ±0.50 D. Conclusions: All the techniques used displayed similar behaviour and provided a tentative addition close to the final addition. Due to the wide agreement intervals observed, the likelihood of error is high and supports the idea that any tentative addition has to be adjusted according to the particular needs of each patient. Among the methods examined here, we would recommend the age-expected procedure, as this technique produced results that correlated best with the final addition.
  • Publication
    Rapid Eye Movements (REMs) and visual dream recall in both congenitally blind and sighted subjects
    (SPIE, 2017-12-22) Bértolo, Helder; Mestre, Tiago; Barrio de Santos, Ana Rosa; Antona Peñalba, Beatriz
    Our objective was to evaluate rapid eye movements (REMs) associated with visual dream recall in sighted subjects and congenital blind. During two consecutive nights polysomnographic recordings were performed at subjects home. REMs were detected by visual inspection on both EOG channels (EOG-H, EOG-V) and further classified as occurring isolated or in bursts. Dream recall was defined by the existence of a dream report. The two groups were compared using t-test and also the two-way ANOVA and a post-hoc Fisher test (for the features diagnosis (blind vs. sighted) and dream recall (yes or no) as a function of time). The average of REM awakenings per subject and the recall ability were identical in both groups. CB had a lower REM density than CS; the same applied to REM bursts and isolated eye movements. In the two-way ANOVA, REM bursts and REM density were significantly different for positive dream recall, mainly for the CB group and for diagnosis; furthermore for both features significant results were obtained for the interaction of time, recall and diagnosis; the interaction of recall and time was however, stronger. In line with previous findings the data show that blind have lower REMs density. However the ability of dream recall in congenitally blind and sighted controls is identical. In both groups visual dream recall is associated with an increase in REM bursts and density. REM bursts also show differences in the temporal profile. REM visual dream recall is associated with increased REMs activity.
  • Publication
    The role of clinical diagnosis criteria on the frequency of accommodative insufficiency
    (Press of International Journal of Ophthalmology, 2019-04-18) García Montero, María; Antona Peñalba, Beatriz; Barrio de Santos, Ana Rosa; Nieto Zayas, Carmen; Martínez Alberquilla, Irene; Hernández Verdejo, José Luis
    AIM: To estimate and compare the frequency of accommodative insufficiency (AI) within the same clinical population sample depending on the type of clinical criteria used for diagnosis. Comparing the frequency within the same population would help to minimize bias due to sampling or methodological variability. METHODS: Retrospective study of 205 medical records of symptomatic subjects free of any organic cause and symptoms persisting despite optical compensation evaluated. Based on the most commonly clinical diagnostics criteria found in the literature, four diagnostics criteria were established for AI (I, II, III and IV) based on subjective accommodative tests: monocular accommodative amplitude two or more diopters below Hofstetter’s minimum value [15-(0.25×age)] (I, II, III, IV); failing monocular accommodative facility with minus lens, establishing the cut-off in 0 cycles per minute (cpm) (I) and in 6 cpm (II, III); failing binocular accommodative facility with minus lens, establishing the cut-off in 0 cpm (I) and in 3 cpm (II). RESULTS: The proportion of AI (95%CI) for criteria I, II, III and IV were 1.95% (0.04%-3.86%), 2.93% (0.31%-4.57%), 6.34% (1.90%-7.85%) and 41.95% (35.14%-48.76%) respectively, with a statistically significant difference shown between these values (χ2=226.7, P<0.001). A pairwise multiple comparison revealed that the proportion of AI detected for criterion IV was significantly greater than the proportion for the rest of the criteria (P-adjusted<0.05 in all cases). CONCLUSION: The prevalence of cases of AI within the same clinical population varies with the clinical diagnostic criteria selected. The variation is statistically significant when considering the monocular accommodative amplitude as the only clinical diagnostic sign.
  • Publication
    Complemento audiovisual para el aprendizaje de procedimientos clínicos optométricos de visión binocular no estrábica
    (2022-06-30) Piedrahita Alonso, María Elena; Antona Peñalba, Beatriz; Barrio de Santos, Ana Rosa; Martín García, Beatriz
    El resultado de este proyecto consta de 35 vídeotutoriales de exploración a pacientes, que complementan el aprendizaje de procedimientos clínicos relacionados con la visión binocular no estrábica. Sirven como guía previa a la realización de las prácticas y de complemento para el estudio de los procedimientos.
  • Publication
    Spanish Cross-Cultural Adaptation, Rasch Analysis and Validation of the Ocular Comfort Index (OCI) Questionnaire
    (MDPI, 2022-11-17) Barrio de Santos, Ana Rosa; González Pérez, Mariano; Heredia Pastor, Clara; Enríquez Fuentes, Jacobo; Antona Peñalba, Beatriz
    The Ocular Comfort Index (OCI) assesses ocular surface irritation and grades the severity of dry eye disease. This study sought to adapt the OCI questionnaire into Spanish, and then to assess the psychometric performance and validity of the new adapted version (OCI-versión española, OCIVE). The questionnaire was translated, back translated, and then cross-culturally adapted for use with Spanish-speaking individuals. The OCIVE was completed by 450 participants, including 53 subjects that were diagnosed with dry eye disease. Through a Rasch analysis, the psychometric properties of item fit, targeting, person separation, reliability, and differential item functioning (DIF) were assessed. To test the convergent validity, we examined the correlation between the OCIVE and the Computer Vision Symptom Scale (CVSS17). Validity was tested in a subgroup of participants with and without dry eye, and test-retest repeatability was determined in a subset of 151 individuals. We also compared, via DIF, the performance of the OCIVE with that of the original OCI. Our Rasch analysis revealed a good model fit, high accuracy, good targeting, unidimensionality, and no DIF according to gender. The validity and repeatability were good. The OCIVE shows comparable psychometric properties to the original English version, making it a valid tool for measuring dry eye symptoms in Spanish adults.
  • Publication
    Fiabilidad intraexaminador y concordancia de pruebas clínicas de evaluación de la visión binocular
    (Universidad Complutense de Madrid, Servicio de Publicaciones, 2010-02-15) Antona Peñalba, Beatriz; Barra Lázaro, Francisco
    El presente trabajo se enmarca dentro de la línea de investigación sobre evaluación de pruebas optométricas desarrollada por el equipo de investigación de Optometría Infantil, Visión Binocular y Ortóptica del Departamento Óptica II (Optometría y Visión) de la UCM, dirigido por el profesor Barra. El principal objetivo de esta investigación fue estudiar la repetibilidad de las pruebas de visión binocular más habitualmente utilizadas dentro del examen optométrico en una población de adultos jóvenes con altas demandas visuales y visión binocular normal. En primer lugar, se quiso averiguar la repetibilidad de las pruebas sometidas a estudio. En concreto, el estudio se centró en la repetibilidad intra-examinador que es la repetibilidad de una prueba para un único examinador utilizando la misma metodología en varias ocasiones diferentes. Para ello, de cada prueba se tomaron medidas en dos ocasiones diferentes separadas temporalmente y se compararon entre sí. Para que la repetibilidad de una prueba sea alta la diferencia entre las dos medidas debe ser lo menor posible en comparación con el rango típico de resultados de la variable evaluada mediante dicha prueba. Si las medidas hubieran sido tomadas por varios examinadores se estaría introduciendo otra fuente de variabilidad y cabría esperar un aumento del error de la medida. Probablemente este aumento del error no sería importante en aquellas pruebas en las que la intervención del examinador en la medida es pequeña (pruebas subjetivas) y sería más elevado en las pruebas objetivas. En segundo lugar, puesto que se han descrito variadas pruebas optométricas para evaluar la misma habilidad visual, se quiso comparar entre sí los resultados ofrecidos por cada una de las pruebas destinadas a medir el mismo parámetro. De este modo se pudo establecer el nivel de concordancia entre los resultados de los distintos procedimientos orientados a caracterizar determinada habilidad y establecer si se pueden o no considerar pruebas intercambiables o por el contrario parecen medir cualidades distintas.
  • Publication
    Aprendizaje guiado para la aplicación de ejercicios de Terapia Visual con un kit básico de tratamiento
    (2020-06-22) Barrio de Santos, Ana Rosa; Antona Peñalba, Beatriz; Sánchez Pérez, María Isabel; Piedrahita Alonso, María Elena; González Pérez, Mariano
  • Publication
    Repeatability of mesopic visual acuity measurements using high- and low-contrast ETDRS letter charts
    (Springer, 2015-05) Barrio de Santos, Ana Rosa; Antona Peñalba, Beatriz; Puell Marín, María Cinta
    To determine the repeatability of mesopic high-contrast (HC) and low-contrast (LC) visual acuity (VA) measurements made at distance and near in healthy young individuals. While the repeatability of photopic VA is well-known, there is a lack of information with regard to the repeatability of VA measured under low luminance conditions. In two different sessions 1 week apart, best-corrected monocular VA was determined using HC (96 %) and LC (10 %) ETDRS charts under mesopic luminance conditions (0.75 cd/m(2)) at distance (HCD, LCD) and near (HCN, LCN) in 47 healthy subjects aged 22.9 +/- 6.8 years. Repeatability was estimated by the Bland and Altman method, whereby the mean difference (MD) and the 95 % limits of agreement were determined as the coefficient of repeatability (COR). Mean logMAR VA values were HCD = 0.09, LCD = 0.44, HCN = 0.21, and LCN = 0.57. Mean differences in measurements between sessions 1 and 2 were not significant, and low in clinical terms (a parts per thousand currency sign1 letter). Repeatability was better for the distance measurements at both high and lowcontrast (COR (HCD) +/- 0.11 and COR (LCD) +/- 0.11 logMAR vs COR (HCN) +/- 0.15 and COR (LCN) +/- 0.16 logMAR), and MDs were also slightly closer to zero for the distance measurements. Similar repeatability was observed between HC and LC VA, both at distance and near. In mesopic conditions, ETDRS charts offer repeatable best-corrected monocular VA measurements. The criterion for a significant change in logMAR VA was 1 line at distance and 1.5 lines at near.