Stability of the posterior corneal surface after laser surface ablation for myopia.
Cornea
; 28(9): 1019-22, 2009 Oct.
Article
en En
| MEDLINE
| ID: mdl-19724209
ABSTRACT
PURPOSE:
The purpose of this study was to evaluate changes in the posterior corneal surface before and after laser surface ablation using the Pentacam.METHODS:
Thirty consecutive myopic eyes having laser surface ablation (14 photorefractive keratectomies, 16 laser-assisted subepithelial keratectomies) were evaluated preoperatively and postoperatively with the Pentacam. Changes in the posterior corneal curvature, posterior elevation, and anterior chamber depth were measured.RESULTS:
The 30 eyes had a mean correction of -4.50 D (range, -2.12 to -8.0) and a mean ablation depth of 58.4 microm (range, 21-106 microm). The change in mean posterior corneal curvature was -0.02 +/- 0.07 mm in the central 4-mm zone (P = 0.106) and the mean posterior displacement was 0.47 +/- 4.23 microm (P = 0.551). The mean change in the anterior chamber depth was -0.06 +/- 0.08 mm (P < 0.001). The amount of forward shift of the posterior corneal surface had no correlation with the residual corneal thickness and ablation depth.CONCLUSIONS:
There was no significant change in the posterior corneal surface after laser surface ablation.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Endotelio Corneal
/
Queratectomía Fotorrefractiva
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Queratectomía Subepitelial Asistida por Láser
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Láseres de Excímeros
/
Cámara Anterior
/
Miopía
Tipo de estudio:
Observational_studies
Límite:
Adult
/
Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Cornea
Año:
2009
Tipo del documento:
Article