ABSTRACT
INTRODUCTION AND OBJECTIVES: After 5 years' experience with endocanalicular dacryocystorhinostomy (E-DCR) using diode laser, the introduction of new materials has led to significant technical differences, thus giving rise to this study to evaluate them. MATERIAL AND METHOD: We compare the behaviour of 2 different kinds of laser guide fibre (silica-fluoropolymer-tefzel and silica-silica-polyamide), using the same laser generator, on organic tissues from fresh animal carcases, and we summarize the clinical behaviour of the new materials in lachrymal surgery cases. RESULTS: We have seen significant differences in the clinical behaviour of the two kinds of laser guides, namely the proposed new materials have a worse behaviour on organic tissues than their physical characteristics might theoretically have suggested. Thus, the use of different guide materials could lead to relevant differences in terms of surgical results, as well as in the comparison of the outcomes of series performed by different surgeons. CONCLUSIONS: It is necessary to determine standards for the materials recommended for this surgery, not only for easier technical performance and better effectiveness, but also to allow comparison of results from different authors.
Subject(s)
Dacryocystorhinostomy/instrumentation , Dacryocystorhinostomy/standards , Laser Therapy/standards , Animals , Equipment DesignABSTRACT
Introducción y objetivos: Después de un periodo de 5 años de experiencia con la dacriocistorrinostomía endocanalicular (DCR-E) con láser diodo, la introducción de nuevos materiales ha originado diferencias técnicas significativas que motivan el presente trabajo para su evaluación. Material y método: Se compara el comportamiento de dos tipos distintos de fibra de guía de láser (sílice-fluoropolímero-tefzel y sílice-sílice-poliamida), usando un mismo generador, sobre tejido orgánico de cadáver animal fresco, y se resume el comportamiento clínico de los nuevos materiales en una serie de casos de cirugía lagrimal. Resultados: Hemos observado diferencias relevantes en el comportamiento clínico de dos tipos distintos de fibras de guía de láser, y se objetiva que los nuevos materiales propuestos tienen un comportamiento sobre tejido orgánico peor de lo que sus características físicas teóricas hacen suponer. Así, la utilización de diferentes materiales de guía puede implicar diferencias relevantes en los resultados de la cirugía, así como en el momento de evaluar estas técnicas en diferentes series realizadas por distintos cirujanos. Conclusiones: Debe buscarse una estandarización de los materiales recomendados para estas cirugías, tanto por su utilidad y efectividad clínica como en la comparación de resultados de diferentes series (AU)
Introduction and objectives: After 5 years experience with endocanalicular dacryocystorhinostomy (E-DCR) using diode laser, the introduction of new materials has led to significant technical differences, thus giving rise to this study to evaluate them. Material and method: We compare the behaviour of 2 different kinds of laser guide fibre (silica-fluoropolymer-tefzel and silica-silica-polyamide), using the same laser generator, on organic tissues from fresh animal carcases, and we summarize the clinical behaviour of the new materials in lachrymal surgery cases. Results: We have seen significant differences in the clinical behaviour of the two kinds of laser guides, namely the proposed new materials have a worse behaviour on organic tissues than their physical characteristics might theoretically have suggested. Thus, the use of different guide materials could lead to relevant differences in terms of surgical results, as well as in the comparison of the outcomes of series performed by different surgeons. Conclusions: It is necessary to determine standards for the materials recommended for this surgery, not only for easier technical performance and better effectiveness, but also to allow comparison of results from different authors (AU)
Subject(s)
Animals , Dacryocystorhinostomy/standards , Ophthalmologic Surgical Procedures/methods , Laser Therapy/instrumentation , Laser Therapy/methods , Dacryocystorhinostomy/instrumentation , Lacrimal Duct Obstruction/surgery , Nasolacrimal Duct/surgeryABSTRACT
OBJECTIVE: To confirm the usefulness of the trans-canalicular laser approach of lachrymal obstructions. MATERIAL AND METHOD: We carried out an observational, prospective, non-randomized interventional study on 150 consecutive eyes treated, between March 2004 and March 2005, using a trans-canalicular approach with a diode laser, under endonasal endoscopic control. We studied 2 groups of 75 eyes: in group I we did not use lachrymal silicone intubation nor mitomycin C; in group II we used mitomycin C and bicanalicular lachrymal intubation. Mean follow-up period has been 16 months. RESULTS: Positive lachrymal irrigation was present in 67/75 eyes in group I and in 71/75 eyes in group II. Clinical improvement was found in 69/75 eyes in group I and in 73/75 in group II. CONCLUSIONS: Technical variations as lachrymal intubation or use of mitomycin C have not demonstrate significant differences. Our results indicate that the transcanalicular approach with diode is effective, with minimal local and general morbidity.
Subject(s)
Dacryocystorhinostomy/methods , Laser Therapy , Aged , Female , Humans , Male , Middle Aged , Prospective StudiesABSTRACT
Objetivo: Confirmar la efectividad del abordaje transcanalicular con láser de la vía lagrimal. Material y método: Se realizó estudio intervencionista, observacional y prospectivo no aleatorizado, realizado entre marzo de 2004 y marzo de 2005, de 150 ojos consecutivos intervenidos por abordaje transcanalicular con láser diodo, con control endoscópico nasal. Se estudiaron 2 grupos de 75 ojos: en el grupo I no se utilizó mitomicina C ni sonda lagrimal; en el grupo II se utilizó mitomicina C y se dejó sonda bicanalicular de silicona. El promedio de seguimiento ha sido de 16 meses. Resultados: Se mantuvo una irrigación positiva en 67/ 75 ojos del grupo I y en 71/75 de los del grupo II. Clínicamente se observó mejoría clínica en 69/75 ojos del grupo I y en 73/75 del grupo II. Conclusiones: Las variaciones técnicas en cuanto a intubación lagrimal o uso de mitomicina C no demuestran diferencias significativas. Nuestros resultados indican que el abordaje transcanalicular con láser diodo es efectivo, con mínima morbilidad local y general
Objective: To confirm the usefulness of the trans-canalicular laser approach of lachrymal obstructions. Material and method: We carried out an observational, prospective, non-randomized interventional study on 150 consecutive eyes treated, between March 2004 and March 2005, using a trans-canalicular approach with a diode laser, under endonasal endoscopic control. We studied 2 groups of 75 eyes: in group I we did not use lachrymal silicone intubation nor mitomycin C; in group II we used mitomycin C and bicanalicular lachrymal intubation. Mean follow-up period has been 16 months. Results: Positive lachrymal irrigation was present in 67/75 eyes in group I and in 71/75 eyes in group II. Clinical improvement was found in 69/75 eyes in group I and in 73/75 in group II. Conclusions: Technical variations as lachrymal intubation or use of mitomycin C have not demonstrate significant differences. Our results indicate that the transcanalicular approach with diode is effective, with minimal local and general morbidity
