Publication: Estudio de los músculos extraoculares mediante tomografía de coherencia óptica de segmento anterior
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2018-04-04
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Universidad Complutense de Madrid
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Abstract
Hasta la fecha se han empleado diferentes técnicas de imagen para visualizar los músculos extraoculares, como la resonancia magnética nuclear, la tomografía computarizada (TC), la ecografía y la biomicroscopía ultrasónica (BMU). Sin embargo, presentan varios inconvenientes como es su falta de disponibilidad en la consulta diaria y el elevado coste, la incomodidad para el paciente, y la baja resolución que ofrecen de la inserción muscular. En los últimos años la Tomografía de Coherencia Óptica (OCT) ha surgido como una alternativa eficaz en la identificación de los músculos rectos extraoculares, siendo además una técnica no invasiva que puede realizarse fácilmente en niños. Por tanto en el presente estudio se ha evaluado la eficacia y reproducibilidad de la OCT de segmento anterior en la identificación y medida de los músculos rectos horizontales. Como objetivos secundarios, se analizaron la medida de la distancia desde la inserción muscular al limbo y el grosor muscular, y se realizó un estudio de correlación para determinar la posible influencia del sexo, la edad y la longitud axial del globo ocular en la medida de la distancia inserción-limbo y del grosor muscular. Además se estudió la concordancia de la distancia inserción-limbo mediante OCT con la medida intraoperatoria, que se considera el gold estándar. Por último se valoró la concordancia entre 3 dispositivos diferentes de OCT...
To date, different imaging techniques have been used to visualize extraocular muscles, such as nuclear magnetic resonance, computed tomography (CT), ultrasound and ultrasound biomicroscopy (UBM). However, they present some drawbacks as they are not readily available for routine consultation and are expensive. Furthermore, they are uncomfortable for the patient, and they offer low resolution of muscle insertion. In recent years, Optical Coherence Tomography (OCT) has emerged as an effective alternative in the identification of the extraocular rectus muscles, being a noninvasive technique that can be easily performed in children. Therefore, in the present study, the efficacy and reproducibility of anterior segment OCT in the identification and measurement of horizontal rectus muscles has been evaluated. As secondary objectives, the measurement from muscle insertion to the sclerocorneal limbus, as well as muscle thickness, was analyzed and a correlation study was performed to determine the possible influence of sex, age and axial length of the eyeball in the measure of limbus-insertion distance and muscle thickness. In addition, the agreement of the limbus-insertion distance was studied by OCT with the intraoperative measurement, which is considered the gold standard. Finally, the agreement between 3 OCT devices was assessed to determine if the measures could be interchangeable...
To date, different imaging techniques have been used to visualize extraocular muscles, such as nuclear magnetic resonance, computed tomography (CT), ultrasound and ultrasound biomicroscopy (UBM). However, they present some drawbacks as they are not readily available for routine consultation and are expensive. Furthermore, they are uncomfortable for the patient, and they offer low resolution of muscle insertion. In recent years, Optical Coherence Tomography (OCT) has emerged as an effective alternative in the identification of the extraocular rectus muscles, being a noninvasive technique that can be easily performed in children. Therefore, in the present study, the efficacy and reproducibility of anterior segment OCT in the identification and measurement of horizontal rectus muscles has been evaluated. As secondary objectives, the measurement from muscle insertion to the sclerocorneal limbus, as well as muscle thickness, was analyzed and a correlation study was performed to determine the possible influence of sex, age and axial length of the eyeball in the measure of limbus-insertion distance and muscle thickness. In addition, the agreement of the limbus-insertion distance was studied by OCT with the intraoperative measurement, which is considered the gold standard. Finally, the agreement between 3 OCT devices was assessed to determine if the measures could be interchangeable...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Medicina, Departamento de Oftalmología y Otorrinolaringología, leída el 09/03/2017