[Corneal topographic alteration after radiofrequency application to an animal model].

Autor:	Paulino LV; Departamento de Oftalmologia, Faculdade de Medicina do ABC, Santo André, SP. leonardovpaulino@hotmail.com, Paulino E, Barros RA, Salles AG, Rehder JR
Jazyk:	portugalština
Zdroj:	Arquivos brasileiros de oftalmologia [Arq Bras Oftalmol] 2005 Jul-Aug; Vol. 68 (4), pp. 451-6. Date of Electronic Publication: 2005 Nov 22.
DOI:	10.1590/s0004-27492005000400007
Abstrakt:	Purpose: To verify the topographical alterations in enucleated pig eye cornea after radiofrequency application. Methods: A prototype radiofrequency modulator with 10 different energy possibilities was used. For each energy we used 10 enucleated pig eyes that were topographed before and after applying radiofrequency, following a nomogram with 8 spots in step one, 16 spots in step 2, and 24 spots in step 3, in a total of 3 steps for each eye, 300 applications and 400 topographies. Results: Corneal curvature variation occurred after radiofrequency applications for all utilized selections, demonstrated by the mean variation of initial KM (minimum dioptry) and final KM (35.78 and 37.37 respectively) with 1.59 dioptries of variation (p<0.001). The energy that demonstrated more stability was 0.625 W/s (65 degrees C). Conclusion: The obtained topographic values demonstrated that the central corneal curvature increased after radiofrequency application, and the higher the energy and the more spots used, more curved became the cornea, despite homogeneity.
Databáze:	MEDLINE
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