Long-term follow-up of orthokeratology corneal reshaping using wavefront aberrometry and contrast sensitivity

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dc.contributor.authorStillitano, Lane [UNIFESP]
dc.contributor.authorSchor, Paulo [UNIFESP]
dc.contributor.authorLipener, Cesar [UNIFESP]
dc.contributor.authorHofling-Lima, Ana Luisa [UNIFESP]
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.date.accessioned2016-01-24T13:51:22Z
dc.date.available2016-01-24T13:51:22Z
dc.date.issued2008-05-01
dc.description.abstractPurpose. To evaluate changes in ocular wavefront aberrations and contrast sensitivity during 1-year follow-up of overnight orthokeratology. Methods. Prospective stud), of 26 eyes that underwent orthokeratology with the BE lens design. Wavefront measurements were analyzed at baseline and after 1. 8, 30 90. 180, and 365 nights of orthokeratology for a 6.5-mm pupil diameter. Contrast sensitivity 1 year after orthokeratology was compared to the baseline value under photopic conditions and mesopic conditions. with and without glare, in the spatial frequencies of 1.5, 3, 6, 111 and 18 cycles/degree. A P Value of less than 0.05 was statistically significant. Results. Higher-order aberration root-mean-square HOA-RMS) increased statistically significantly from 0.41 +/- 0.12 mu m to 1.04 +/- 0.32 mu m up to night 8. Defocus (Z4) decreased until night 8 and then stabilized. Astigmatism (Z3 + Z5) did not change. There was a sevenfold increase in spherical aberration (Z12) until night 8, which Subsequently remained unchanged (P<0.001). Coma (Z7 + Z8) increased until night 90 and then stabilized (P<0.001). Other Zernike modes showed stability at night 1, with the exception of quadrafoil (Z14) (P=0.048). Mesopic contrast sensitivity. with and without glare, at 18 cycles/degree, decreased but failed to reach statistical significance (P=0.922 and P=0.827. respectively). Conclusions. Most optical aberrations stabilized within the first week after beginning orthokeratology with BE lens. There was not a statistically significant reduction in contrast sensitivity 1 year after treatment.en
dc.description.affiliationUniversidade Federal de São Paulo, Paulista Sch Med UNIFESP EPM, Dept Ophthalmol, Contact Lens & Refract Surg Sectors, São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Paulista Sch Med UNIFESP EPM, Dept Ophthalmol, Contact Lens & Refract Surg Sectors, São Paulo, Brazil
dc.description.sourceWeb of Science
dc.format.extent140-145
dc.identifierhttp://dx.doi.org/10.1097/ICL.0b013e318145ab5d
dc.identifier.citationEye & Contact Lens-science and Clinical Practice. Philadelphia: Lippincott Williams & Wilkins, v. 34, n. 3, p. 140-145, 2008.
dc.identifier.doi10.1097/ICL.0b013e318145ab5d
dc.identifier.issn1542-2321
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/30658
dc.identifier.wosWOS:000258835400002
dc.language.isoeng
dc.publisherLippincott Williams & Wilkins
dc.relation.ispartofEye & Contact Lens-science and Clinical Practice
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectorthokeratologyen
dc.subjectcorneal reshapingen
dc.subjectaberrometryen
dc.subjectcontrast sensitivityen
dc.titleLong-term follow-up of orthokeratology corneal reshaping using wavefront aberrometry and contrast sensitivityen
dc.typeinfo:eu-repo/semantics/article
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