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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Propostas de algoritmos e fórmulas para planejamento cirúrgico dos estrabismos horizontais / Proposals algorihms and formulas for surgical planning of horizontal strabismus

Rocha, Maria Nice Araujo Moraes 19 January 2016 (has links)
Submitted by Erika Demachki (erikademachki@gmail.com) on 2016-09-20T21:40:36Z No. of bitstreams: 2 Tese - Maria Nice Araújo Moraes Rocha - 2016.pdf: 4334909 bytes, checksum: 0422cbf81db864afe284617eb3dca3e8 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2016-09-21T13:57:20Z (GMT) No. of bitstreams: 2 Tese - Maria Nice Araújo Moraes Rocha - 2016.pdf: 4334909 bytes, checksum: 0422cbf81db864afe284617eb3dca3e8 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2016-09-21T13:57:20Z (GMT). No. of bitstreams: 2 Tese - Maria Nice Araújo Moraes Rocha - 2016.pdf: 4334909 bytes, checksum: 0422cbf81db864afe284617eb3dca3e8 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2016-01-19 / The objective of this study was to propose the planning of surgery for correction of horizontal strabismus, esotropia and exotropias through algorithms and formulas that convert the measure of the deviation angle prism diopters to millimeters, which is used in surgical practice. Demonstrated the preparing of the formulas and flowcharts according to the theoretical foundations presented. Was make retrospective analysis of 136 patients operated in accordance with the algorithms and formulas proposed. Two algorithms were constructed on the basis of anatomy, physiology and oculomotricity, instrumental in planning and semiotics of strabismus surgery. The preparation of the formulations was done using mathematical calculations associated with knowledge of the mechanics of eye movements. It was completed two formulas for esotropias correction: ET1 and ET2 = = 0,33D 0,30D and two for exotropias correction: XT1 and XT2 = = 0,40D 0,43D, dependent on the number of eyes to be operated and magnitude of the deviation. For this work was adopted as individual success criteria to orthotropia ± 10Δ, in agreement with several studies in the literature. The result of successful group in the immediate post operative period (7days after surgery) was equal to 92.9% in the correction of esotropia and 82.3% in exotropias. In the late postoperative period (3-6 months after surgery) there was the result of success were 75.3% and 62.8% for esotropias to exotropias. The results were compared to studies conducted in similar conditions and concluded that the proposed method is effective for surgical planning in correcting esotropias and exotropias. / O objetivo deste trabalho foi propor o planejamento da cirurgia para correção de estrabismos horizontais- esotropias e exotropias- através de algoritmos e fórmulas que convertem a medida do ângulo do desvio de dioptrias prismáticas para milímetros, que é usada na prática cirúrgica. Demonstrou-se a elaboração das fórmulas e fluxogramas de acordo com os fundamentos teóricos apresentados. Foi feita análise retrospectiva de 136 pacientes operados de acordo com os algoritmos e fórmulas propostas. Dois algoritmos foram construídos com base na anatomia, fisiologia e oculomotricidade, fundamentais na semiologia do estrabismo e planejamento da cirurgia. A elaboração das fórmulas foi feita utilizando cálculos matemáticos associados ao conhecimento da mecânica dos movimentos oculares. Construimos duas fórmulas para correção de esotropias:ET1= 0,33D e ET2= 0,30D e outras duas para correção de exotropias: XT1= 0,40D e XT2= 0,43D, dependentes do número de olhos a serem operados e magnitude do desvio. Para este trabalho foi adotado como critério de sucesso individual ortotropia± 10Δ, em consenso com vários estudos na literatura. O resultado de sucesso em grupo no pósoperatório imediato (7 dias após a cirurgia) foi igual a 92,9% nas correções de esotropias e 82,3% nas exotropias. No pós-operatório tardio (3-6 meses após a cirurgia) observou-se o resultado de sucesso em 75,3% para esotropias e 62,8% para exotropias. Os resultados foram comparados com estudos feitos em condições similares. Concluímos que o método proposto é eficaz para o planejamento cirúrgico na correção de esotropias e exotropias.

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