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dc.contributor.advisorGalvis Ramírez, Virgiliospa
dc.contributor.advisorTello Hernández, Alejandrospa
dc.contributor.advisorCamacho López, Paul Anthonyspa
dc.contributor.authorJaramillo Muñoz, Luis Carlosspa
dc.date.accessioned2020-06-26T20:01:40Z
dc.date.available2020-06-26T20:01:40Z
dc.date.issued2015-12
dc.identifier.urihttp://hdl.handle.net/20.500.12749/1777
dc.description.abstractLa cirugía refractiva con excimer láser es un procedimiento quirúrgico muy frecuente desde hace más de 20 años, por lo que actualmente, muchos pacientes con antecedente de cirugía refractiva están llegando a necesitar debido a la aparición de catarata, la implantación de un lente intraocular. Para un adecuado cálculo del mismo, es de suma importancia conocer el poder corneal del paciente, el cual se infiere matemáticamente mediante el uso del índice queratométrico. Desafortunadamente el índice queratométrico es impreciso en aquellos casos en donde haya una alteración de la superficie corneal, como por ejemplo la cirugía refractiva. Varios estudios han demostrado que el cálculo del poder corneal usando el índice queratométrico como guía genera sobre-estimaciones en pacientes con antecedente de corrección miópica y subestimaciones en tratamientos hipermetrópicos. Este estudio tiene como objetivo evaluar la utilidad de la técnica de trazado de rayos (Mean Pupil Power) en el cálculo del poder corneal real ofrecido por el topógrafo Sirius (CSO, Costruzione Strumenti Oftalmici) y si este se correlaciona al calculado por el método de la historia clínica introducido por Holladay en 1989, el cual hasta el momento se considera como la “regla de oro”.spa
dc.description.tableofcontents1. INTRODUCCIÓN ............................................................................................................................... 4 2. MARCO TEÓRICO ............................................................................................................................ 6 2.1 Causas de errores biométricos en ojos post-cirugía fotorrefractiva ................................... 8 2.2 Determinación del poder de la córnea en un ojo normal ......................................................... 8 2.3 Error en la determinación del poder corneal después de cirugía fotorrefractiva ...... 12 2.4 Métodos para compensar los errores en la determinación del poder del lente intraocular ............................................................................................................................................................... 14 2.5 Métodos para calcular el poder de la córnea luego de cirugía refractiva ...................... 14 El método de la Historia Clínica................................................................................................................ 14 El método del lente de contacto ................................................................................................................. 15 El método de Hammed-Wang-Koch ........................................................................................................ 16 El método de Wang–Koch-Maloney ........................................................................................................ 17 El método de Shammas ................................................................................................................................. 17 El método de Haigis L .................................................................................................................................... 18 Otros métodos ................................................................................................................................................... 18 3. HIPÓTESIS ........................................................................................................................................ 21 4. OBJETIVOS ....................................................................................................................................... 21 4.1 General ....................................................................................................................................................... 21 4.2 Específicos ................................................................................................................................................. 21 5. METODOLOGÍA ............................................................................................................................. 22 5.1 Tipo de estudio ........................................................................................................................................ 22 5.2 Universo y Muestra ............................................................................................................................... 22 5.3 Población.................................................................................................................................................... 22 5.4 Criterios de Selección ........................................................................................................................... 22 Inclusión............................................................................................................................................................... 22 Exclusión ............................................................................................................................................................. 22 5.5 Instrumentos de Recolección ............................................................................................................. 23 5.6 Procedimiento Quirúrgico .................................................................................................................. 23 5.7 Recolección y Análisis de Datos ....................................................................................................... 23 6. CONSIDERACIONES ÉTICAS .................................................................................................. 25 7. RESULTADOS ................................................................................................................................. 26 8. DISCUSIÓN ....................................................................................................................................... 38 9. CONCLUSIONES ............................................................................................................................ 42 10. REFERENCIAS BIBLIOGRÁFICAS ................................................................................... 43 Anexo 1 ........................................................................................................................................................ 48 Carta de Aval del Comité de Ética en Investigaciones Foscal (CEI - FOSCAL) ...................... 48spa
dc.format.mimetypeapplication/pdfspa
dc.language.isospaspa
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/2.5/co/*
dc.titleDeterminación del poder corneal luego de cirugía refractiva con éxcimer láser en el Centro Oftalmológico Virgilio Galvisspa
dc.title.translatedDetermination of corneal power after refractive surgery with laser excimer at the Virgilio Galvis Ophthalmological Centereng
dc.degree.nameEspecialista en Oftalmologíaspa
dc.coverageBucaramanga (Santander, Colombia)spa
dc.publisher.grantorUniversidad Autónoma de Bucaramanga UNABspa
dc.rights.localAbierto (Texto Completo)spa
dc.publisher.facultyFacultad Ciencias de la Saludspa
dc.publisher.programEspecialización en Oftalmologíaspa
dc.description.degreelevelEspecializaciónspa
dc.type.driverinfo:eu-repo/semantics/masterThesis
dc.type.localTesisspa
dc.type.coarhttp://purl.org/coar/resource_type/c_bdcc
dc.subject.keywordsRefractive surgeryeng
dc.subject.keywordsCorneaeng
dc.subject.keywordsLaser surgeryeng
dc.subject.keywordsMedicineeng
dc.subject.keywordsOphthalmologyeng
dc.subject.keywordsResearcheng
dc.identifier.instnameinstname:Universidad Autónoma de Bucaramanga - UNABspa
dc.identifier.reponamereponame:Repositorio Institucional UNABspa
dc.type.hasversioninfo:eu-repo/semantics/acceptedVersion
dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.accessrightshttp://purl.org/coar/access_right/c_abf2spa
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dc.contributor.cvlachttps://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0001009125;https://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0000552453*
dc.contributor.googlescholarhttps://scholar.google.es/citations?hl=es#user=puxZHKYAAAAJ;https://scholar.google.es/citations?hl=es#user=CZOaBDoAAAAJ*
dc.contributor.scopushttps://www.scopus.com/authid/detail.uri?authorId=6603664598;https://www.scopus.com/authid/detail.uri?authorId=55963715000*
dc.contributor.researchgatehttps://www.researchgate.net/profile/Virgilio_Galvis*
dc.subject.lembCirugía refractivaspa
dc.subject.lembCórneaspa
dc.subject.lembCirugía laserspa
dc.subject.lembMedicinaspa
dc.subject.lembOftalmologíaspa
dc.subject.lembInvestigacionesspa
dc.description.abstractenglishRefractive surgery with excimer laser is a very common surgical procedure since more than 20 years ago, so today, many patients with a history of surgery refractive are coming to need due to the appearance of cataract, the implantation of a intraocular lens. For an adequate calculation of the same, it is very important to know the corneal power of the patient, which is mathematically inferred by using the keratometric index. Unfortunately the keratometric index is imprecise in those cases where there is an alteration of the corneal surface, such as refractive surgery. Various studies have shown that the calculation of corneal power using the keratometric index as a guide, it generates overestimations in patients with a history of myopic correction and underestimations in hyperopic treatments. This study aims to evaluate the usefulness of the ray tracing technique (Media Pupil Power) in the calculation of the real corneal power offered by the Sirius surveyor (CSO, Costruzione Strumenti Oftalmici) and if this correlates to that calculated by the clinical history introduced by Holladay in 1989, which until now is considered as the "golden rule".eng
dc.rights.creativecommonsAtribución-NoComercial-SinDerivadas 2.5 Colombia*


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