Resumo

GONZALEZ PENA, Anabel; ORTEGA DIAZ, Lorelei  e  PEREZ CANDELARIA, Eneida. Induced astigmatism in cataract's surgery by phacoemulsification technique. Rev Cubana Oftalmol [online]. 2011, vol.24, n.1, pp. 30-39. ISSN 0864-2176.

OBJECTIVE: To determine the induced astigmatism in cataract's surgery by phacoemulsification technique in patients operated on the "Ramon Pando Ferrer" Cuban Institute of Ophthalmology from January to December, 2007. METHODS: A retrospective, longitudinal and descriptive study was conducted to assess the behavior of postsurgical astigmatism in 178 patients operated by phacoemulsification technique (phacochop) and implant of polymethilmethacrylate or acrylic intraocular lens carried out by the same surgeon. Variables analyzed were: visual acuity without glasses and a better corrected visual acuity, keratometry, incision's size and place, as well as the induced astigmatism. RESULTS: The mean of the induced keratometry astigmatism was of 0,61 dioptres at month of surgery and it was less than 1,00 keratometry dioptres with a trend to decrease in time. The induced keratometry astigmatism related to incision's size was directly proportional and its relation to the place of incision there were not significant differences. The improvement in visual acuity without glasses and the better corrected visual acuity was remarkable insofar as the induced keratometry astigmatism was less. CONCLUSIONS:The phacoemulsification (phacochop) offer to surgeon an stable incision inducing a low postoperative astigmatism and a satisfactory visual results for patient.

Palavras-chave : Astigmatismo inducido; cirugía de catarata; facoemulsificación; lente intraocular; queratometría; Induced astigmatism; cataract surgery; phacoemulsification; intraocular lens; keratometry.

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