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Topographic stability after hyperopic LASIK
Diego de Ortueta1, Samuel Arba Mosquera
1Augenzentrum Recklinghausen, Recklinghausen, Germany. diego.de.ortueta@augenzentrum.org
Journal of Refractive Surgery (Thorofare, N.J. : 1995)
|March 9, 2010
Summary
Topographic changes after hyperopic LASIK were analyzed over 36 months. No significant topographic regression was observed, indicating refractive stability following the procedure.
Area of Science:
- Ophthalmology
- Refractive Surgery
- Corneal Topography
Background:
- Hyperopic LASIK aims to correct farsightedness.
- Understanding long-term refractive stability is crucial for patient outcomes.
- Corneal topography provides objective data on refractive changes.
Purpose of the Study:
- To analyze and compare time-dependent topographic changes after hyperopic LASIK.
- To evaluate refractive stability and identify potential regression patterns.
Main Methods:
- Retrospective evaluation of 66 eyes from 37 patients treated for hyperopic astigmatism.
- Topographic analyses performed at 3, 12, and 36 months post-surgery.
- Assessment of Maloney index, simulated keratometry (sim K), and keratometry (K) readings.
Main Results:
- 92% of eyes achieved manifest refraction within +/- 0.50 D at 3 months, decreasing to 72% at 36 months.
- No significant regression was noted between 3 months and 3 years postoperatively.
- Mean regression rates were low (e.g., 0.016 D/month for Maloney index) between 3 and 36 months.
Conclusions:
- Corneal topography is an objective tool for analyzing regression after hyperopic LASIK.
- The SCHWIND ESIRIS laser demonstrated no significant topographic regression between 3 and 36 months.
- Topography aids in differentiating regression, topographic change, or latent hyperopia.
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