Influence of surgical reduction of intraocular pressure on regions of the visual field with different levels of sensitivity

Influence of surgical reduction of intraocular pressure on regions of the visual field with different levels of sensitivity

Autor Salim, S. Google Scholar
Paranhos, A. Google Scholar
Lima, M. Google Scholar
Shields, M. B. Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
Yale Univ
Resumo PURPOSE: To determine whether the ability to document improvement in visual fields after intraocular pressure (IOP) reduction can be enhanced by focusing on regions of the field with different levels of sensitivity.DESIGN: Cohort study.METHODS: This is a retrospective study.SETTING: Yale Eye Center.STUDY POPULATION: the visual fields (Octopus G2) of 30 eyes of 30 patients undergoing trabeculectomy.OBSERVATION PROCEDURE: Visual fields were evaluated a mean of three months before and 7.8 months after surgery.MAIN OUTCOME MEASURES: Change in sensitivity between the preoperative and postoperative visual fields (Delta S) was evaluated globally by comparing all 59 points of sensitivity and regionally in three groups according to preoperative sensitivity (pre-S): 25% of highest, 50% intermediate, and 25% of lowest points of sensitivity. Improvement in Delta S was also correlated with preoperative mean defect (pre-MD), percent intraocular pressure (IOP) reduction (Delta IOP%), and patient's age.RESULTS: Six visual fields showed improvement in Delta S when evaluated globally and nine showed improvement in pre-S subgroups. of the latter, all nine showed improvement in the subgroup with the lowest pre-S, and two in the intermediate subgroup, but none in the subgroup with the highest pre-S. Combining the subgroups with the lowest pre-S and the highest Delta IOP% was associated with the highest mean Delta S.CONCLUSION: the ability to document improvement in visual fields following surgical reduction of IOP may be enhanced by focusing on subgroups of test points with lower baseline sensitivity. (C) 2001 by Elsevier Science Inc. All rights reserved.
Idioma Inglês
Data de publicação 2001-10-01
Publicado em American Journal of Ophthalmology. New York: Elsevier B.V., v. 132, n. 4, p. 496-500, 2001.
ISSN 0002-9394 (Sherpa/Romeo, fator de impacto)
Publicador Elsevier B.V.
Extensão 496-500
Fonte http://dx.doi.org/10.1016/S0002-9394(01)01188-6
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000171530700005
Endereço permanente http://repositorio.unifesp.br/handle/11600/26635

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