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[Measurement of the central corneal power after myopic LASIK].
- Source :
-
Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft [Ophthalmologe] 2008 Jan; Vol. 105 (1), pp. 60-5. - Publication Year :
- 2008
-
Abstract
- Purpose: Comparison of the central corneal refractive power before and after myopic LASIK using the Keratograph and the Pentacam. The Scheimpflug technique (Pentacam) enables the measurement of the corneal refractive power by examining the anterior and posterior corneal curvature.<br />Method: The corneal refractive power of 59 eyes was examined before, 3 months and 6 months after myopic LASIK. The refractive power was measured at the corneal apex and at a distance of 2 and 4 mm. Statistical analysis was performed using the Wilcoxon signed rank test; a p value of 0.05 or less was considered statistically significant.<br />Results: At the corneal apex and at a distance of 2 mm the findings with the Keratograph showed a higher refractive power of up to 1.05 D. The differences were statistically significant at all times. At a distance of 4 mm from the corneal apex postoperatively there was no statistically significant difference.<br />Conclusion: The results using the Pentacam system showed a lower corneal refractive power following myopic LASIK at all times. Its measuring principle compared to that of the Keratograph should be preferred when detecting changes of the refractive power of the central cornea after corneal refractive procedures.
- Subjects :
- Adult
Equipment Design
Equipment Failure Analysis
Female
Humans
Male
Middle Aged
Myopia complications
Refractive Errors etiology
Refractometry methods
Reproducibility of Results
Sensitivity and Specificity
Treatment Outcome
Keratomileusis, Laser In Situ
Myopia diagnosis
Myopia surgery
Refractive Errors diagnosis
Refractometry instrumentation
Subjects
Details
- Language :
- German
- ISSN :
- 0941-293X
- Volume :
- 105
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
- Publication Type :
- Academic Journal
- Accession number :
- 18038139
- Full Text :
- https://doi.org/10.1007/s00347-007-1601-2