title: Surgical planning for horizontal strabismus using Support Vector Regression.
abstract: Strabismus is a pathology which affects about 4% of the population, causing esthetic problems (reversible at any age) and irreversible sensory disorders, altering the vision mechanism. Many techniques can be applied to settle the muscular balance, thus eliminating strabismus. However, when the conservative treatment is not enough, the surgical treatment is adopted, applying recoils or resections to the ocular muscles affected. The factors involved in the surgical strategy in cases of strabismus are complex, demanding both theoretical knowledge and experience from the surgeon. So, the present work proposes a methodology based on Support Vector Regression to help the physician with decision related to horizontal strabismus surgeries. The efficiency of the method at the indication of the surgical plan was evaluated through the average difference between the values that it provided and the values indicated by the specialists. In the planning of medial rectus muscles surgeries, the average error was 0.5mm for recoil and 0.7 for resection. For lateral rectus muscles, the mean error was 0.6 for recoil and 0.8 for resection. The results are promising and prove the feasibility of the use of Support Vector Regression in the indication of strabismus surgeries.
authors.affiliation: Federal University of Maranhão - UFMA, Applied Computing Group - NCA/UFMA, Av. dos Portugueses, SN, Campus do Bacanga, Bacanga 65085-580, São Luís, MA, Brazil. Electronic address: joao.dallyson@ufma.br.
authors.forename: João Dallyson Sousa de
authors.initials: JD
authors.lastname: Almeida
authors.affiliation: Federal University of Maranhão - UFMA, Applied Computing Group - NCA/UFMA, Av. dos Portugueses, SN, Campus do Bacanga, Bacanga 65085-580, São Luís, MA, Brazil. Electronic address: ari@dee.ufma.br.
authors.forename: Aristófanes Corrêa
authors.initials: AC
authors.lastname: Silva
authors.affiliation: Federal University of Maranhão - UFMA, Applied Computing Group - NCA/UFMA, Av. dos Portugueses, SN, Campus do Bacanga, Bacanga 65085-580, São Luís, MA, Brazil. Electronic address: jorgemeireles1@gmail.com.
authors.forename: Jorge Antonio Meireles
authors.initials: JA
authors.lastname: Teixeira
authors.affiliation: Federal University of Maranhão - UFMA, Applied Computing Group - NCA/UFMA, Av. dos Portugueses, SN, Campus do Bacanga, Bacanga 65085-580, São Luís, MA, Brazil. Electronic address: paiva@deinf.ufma.br.
authors.forename: Anselmo Cardoso
authors.initials: AC
authors.lastname: Paiva
authors.affiliation: Pontifical Catholic University of Rio de Janeiro - PUC-Rio, R. São Vicente, 225, Gávea 22453-900, Rio de Janeiro, RJ, Brazil. Electronic address: mgattass@tecgraf.puc-rio.br.
authors.forename: Marcelo
authors.initials: M
authors.lastname: Gattass
mesh_terms: D003658:Decision Making, Computer-Assisted; D006801:Humans; D013508:Ophthalmologic Surgical Procedures; D010347:Patient Care Planning; D013285:Strabismus / Q000601:surgery*; D060388:Support Vector Machine
keywords: Horizontal strabismus; Machine learning; Support Vector Regression; Surgical planning