Changes in Spherical Aberration after Various Corneal Surface Ablation Techniques
Korean Journal of Ophthalmology
;
: 81-86, 2013.
Article
Dans Anglais
| WPRIM
| ID: wpr-143922
ABSTRACT
PURPOSE:
The corneal change induced by refractive procedures influence both the postoperative refractive status and the ocular spherical aberration (SA). We evaluated changes in corneal SA after three types of surface ablation phototherapeutic keratectomy (PTK), myopic photorefractive keratectomy (PRK), and myopic wavefront-guided laser epithelial keratomileusis (LASEK).METHODS:
Twenty-six eyes (25 patients) were subjected to PTK 26 eyes (14 patients) to PRK, and 34 eyes (17 patients) to wavefront-guided LASEK. Corneal SA was measured with the iTrace in all patients both preoperatively and 6 months postoperatively.RESULTS:
Six months after surgery, mean corneal SA was -0.173 +/- 0.171 micrometer in the PTK group, 0.672 +/- 0.200 micrometer in the PRK group, and 0.143 +/- 0.136 micrometer in the wavefront-guided LASEK group. The mean difference between the preoperative and postoperative corneal SA (DeltaSA) was -0.475 micrometer in the PTK group, 0.402 micrometer in the PRK group, and -0.143 micrometer in the wavefront-guided LASEK group.CONCLUSIONS:
Surgically induced changes in corneal SA vary with procedure. The prediction of the pattern of SA change induced by various surface ablation procedures may be helpful for developing future surgical procedures.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Dystrophies héréditaires de la cornée
/
Études prospectives
/
Études de suivi
/
Résultat thérapeutique
/
Photokératectomie réfractive
/
Kératomileusis in situ avec laser excimère
/
Aberration du front d'onde cornéen
/
Myopie
Type d'étude:
Étude observationnelle
/
Étude pronostique
Limites du sujet:
Adulte
/
Adulte très âgé
/
Femelle
/
Humains
/
Mâle
langue:
Anglais
Texte intégral:
Korean Journal of Ophthalmology
Année:
2013
Type:
Article
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