Utilize este identificador para referenciar este registo: http://hdl.handle.net/1822/20719

TítuloLong-term changes in corneal structure and tear inflammatory mediators after orthokeratology and LASIK
Autor(es)González-Pérez, Javier
Villa-Collar, César
González-Méijome, José Manuel
Garcia-Porta, Nery
Parafita, Manuel A.
Palavras-chaveInflammatory mediators
EditoraAssociation for Research in Vision and Ophthalmology (ARVO)
RevistaInvestigative Ophthalmology & Visual Science
CitaçãoGonzález-Pérez J, Villa-Collar C, González-Méijome JM, Porta NG, Parafita MÁ. Long-term changes in corneal structure and tear inflammatory mediators after orthokeratology and LASIK. Invest Ophthalmol Vis Sci. 2012 Aug 7;53(9):5301-11. doi: 10.1167/iovs.11-9155.
Resumo(s)PURPOSE: To monitor changes in corneal structure and level of inflammatory mediators in tears of myopic patients following orthokeratology (OK) and laser in situ keratomileusis (LASIK). METHODS: Sixty-two myopic subjects were analyzed in this prospective study. Thirty-two had worn Paragon CRT contact lenses and 30 underwent standard LASIK. Thirty-two control subjects were also recruited. Pachometry and corneal topography were performed 12 months after both interventions. Tears were collected and assayed using ELISA for IL-6, IL-8, matrix metalloproteinase-9 (MMP-9), and epidermal growth factor (EGF). RESULTS: Corneal power decreased in the central area and increased in the paracentral area. Simultaneously, there was a central corneal thinning with mid-peripheral thickening for OK. No changes were observed for LASIK. In comparison with controls, IL-6, IL-8, MMP-9, and EGF levels were increased significantly for OK (P < 0.01). Only MMP-9 (P < 0.01) and EGF (P < 0.01) were increased for LASIK. Pro-inflammatory response was found to be associated with the degree of myopia in the OK group. The MMP-9 and EGF upregulation was linked to the presence of iron deposition in both groups, whereas increased levels of EGF were connected with the presence of myopic regression after LASIK. CONCLUSIONS: Both interventions involved important tissue reshaping. The physical presence of a reverse geometry contact lens caused certain markers to change significantly in comparison with no lens wear or LASIK in the long-term response. MMP-9 was significantly higher in tears of subjects presenting iron deposition after OK or LASIK, and EGF levels seemed to play an important role in postoperative refractive outcomes after LASIK.
Versão da editorahttp://www.iovs.org/cgi/pmidlookup?view=long&pmid=22789928
Arbitragem científicayes
Aparece nas coleções:CDF - OCV - Artigos/Papers (with refereeing)

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